Michal Abrahamowicz

Summary

Affiliation: McGill University
Country: Canada

Publications

  1. doi request reprint Comparison of alternative models for linking drug exposure with adverse effects
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
    Stat Med 31:1014-30. 2012
  2. pmc QUARITE (quality of care, risk management and technology in obstetrics): a cluster-randomized trial of a multifaceted intervention to improve emergency obstetric care in Senegal and Mali
    Alexandre Dumont
    Department of Obstetrics and Gynecology, Universite de Montreal, Canada
    Trials 10:85. 2009
  3. doi request reprint Reducing the variance of the prescribing preference-based instrumental variable estimates of the treatment effect
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 174:494-502. 2011
  4. doi request reprint Patterns of health services use prior to a first diagnosis of psychosis: the importance of primary care
    Kelly K Anderson
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, 1020 Pine Avenue West, Montreal, QC, H3A 1A2, Canada
    Soc Psychiatry Psychiatr Epidemiol 48:1389-98. 2013
  5. pmc Do physician communication skills influence screening mammography utilization?
    Ari Nareg Meguerditchian
    Clinical and Health Informatics Research Group, McGill University, 1140 Pine Avenue West, Montreal, QC, H3A 1A3, Canada
    BMC Health Serv Res 12:219. 2012
  6. doi request reprint Influence of physicians' management and communication ability on patients' persistence with antihypertensive medication
    Robyn Tamblyn
    Department of Medicine, McGill University, 1140 Pine Ave W, Montreal, QC, H3A 1A3 Canada
    Arch Intern Med 170:1064-72. 2010
  7. pmc A randomized trial of the effectiveness of on-demand versus computer-triggered drug decision support in primary care
    Robyn Tamblyn
    Department of Epidemiology and Biostatistics, McGill University, Morrice House, 1140 Pine Avenue West, Montreal Quebec, Canada, H3A 1A3
    J Am Med Inform Assoc 15:430-8. 2008
  8. doi request reprint Predictors of disability and pain six months after the end of treatment for fibromyalgia
    Patricia L Dobkin
    Department of Medicine, McGill University Health Centre, 687 Pine Avenue West, Montreal, Quebec, Canada
    Clin J Pain 26:23-9. 2010
  9. doi request reprint Longitudinal evolution of risk of coronary heart disease in systemic lupus erythematosus
    Igor Karp
    Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada
    J Rheumatol 39:968-73. 2012
  10. doi request reprint Consultation with an arthritis specialist for children with suspected juvenile rheumatoid arthritis: a population-based study
    Debbie Ehrmann Feldman
    Faculte de Medecine, Ecole de readaptation, Universite de Montreal, CP 6128, Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
    Arch Pediatr Adolesc Med 162:538-43. 2008

Detail Information

Publications93

  1. doi request reprint Comparison of alternative models for linking drug exposure with adverse effects
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
    Stat Med 31:1014-30. 2012
    ..We illustrated the practical advantages of AIC-based a posteriori model selection and WCE modeling in a real-life pharmacoepidemiology example...
  2. pmc QUARITE (quality of care, risk management and technology in obstetrics): a cluster-randomized trial of a multifaceted intervention to improve emergency obstetric care in Senegal and Mali
    Alexandre Dumont
    Department of Obstetrics and Gynecology, Universite de Montreal, Canada
    Trials 10:85. 2009
    ..Secondary goals include evaluation of the relationships between effectiveness and resource availability, service organization, medical practices, and satisfaction among health personnel...
  3. doi request reprint Reducing the variance of the prescribing preference-based instrumental variable estimates of the treatment effect
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 174:494-502. 2011
    ..Therefore, the new method improved the overall accuracy of IV estimates in studies with unobserved confounding and time-varying prescribing preferences...
  4. doi request reprint Patterns of health services use prior to a first diagnosis of psychosis: the importance of primary care
    Kelly K Anderson
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, 1020 Pine Avenue West, Montreal, QC, H3A 1A2, Canada
    Soc Psychiatry Psychiatr Epidemiol 48:1389-98. 2013
    ..We estimated the extent to which socio-demographic, clinical, and health service indicators are associated with patterns of service use for mental health reasons preceding a first diagnosis of psychosis...
  5. pmc Do physician communication skills influence screening mammography utilization?
    Ari Nareg Meguerditchian
    Clinical and Health Informatics Research Group, McGill University, 1140 Pine Avenue West, Montreal, QC, H3A 1A3, Canada
    BMC Health Serv Res 12:219. 2012
    ..We assessed whether patient-physician communication examination scores in a national, standardized clinical skills examination predicted future use of screening mammography (SM)...
  6. doi request reprint Influence of physicians' management and communication ability on patients' persistence with antihypertensive medication
    Robyn Tamblyn
    Department of Medicine, McGill University, 1140 Pine Ave W, Montreal, QC, H3A 1A3 Canada
    Arch Intern Med 170:1064-72. 2010
    ..The purpose of this study was to determine whether a physician's medical management and communication ability influence persistence with antihypertensive treatment...
  7. pmc A randomized trial of the effectiveness of on-demand versus computer-triggered drug decision support in primary care
    Robyn Tamblyn
    Department of Epidemiology and Biostatistics, McGill University, Morrice House, 1140 Pine Avenue West, Montreal Quebec, Canada, H3A 1A3
    J Am Med Inform Assoc 15:430-8. 2008
    ..Physicians in each study condition were able to preset levels that triggered alerts...
  8. doi request reprint Predictors of disability and pain six months after the end of treatment for fibromyalgia
    Patricia L Dobkin
    Department of Medicine, McGill University Health Centre, 687 Pine Avenue West, Montreal, Quebec, Canada
    Clin J Pain 26:23-9. 2010
    ..The goal of this study was to identify factors associated with decreased disability and lower pain scores 6 months after a multimodal treatment program for fibromyalgia (FM)...
  9. doi request reprint Longitudinal evolution of risk of coronary heart disease in systemic lupus erythematosus
    Igor Karp
    Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada
    J Rheumatol 39:968-73. 2012
    ..To produce evidence on the longitudinal evolution of risk factors for coronary heart disease (CHD) in patients with systemic lupus erythematosus (SLE)...
  10. doi request reprint Consultation with an arthritis specialist for children with suspected juvenile rheumatoid arthritis: a population-based study
    Debbie Ehrmann Feldman
    Faculte de Medecine, Ecole de readaptation, Universite de Montreal, CP 6128, Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
    Arch Pediatr Adolesc Med 162:538-43. 2008
    ..To describe consultation with an arthritis specialist because of suspected new-onset juvenile rheumatoid arthritis (JRA) and to determine factors associated with prompt consultation...
  11. doi request reprint Predictors of pain for patients with early inflammatory polyarthritis
    Patricia L Dobkin
    McGill University, Montreal, Quebec, Canada
    Arthritis Care Res (Hoboken) 65:992-9. 2013
    ..To identify predictors of pain at 1 year in patients with early inflammatory polyarthritis (EIP)...
  12. doi request reprint The risk of lung cancer related to dietary intake of flavonoids
    Krista Yorita Christensen
    University of Montreal Hospital Research Centre, Montreal, Canada
    Nutr Cancer 64:964-74. 2012
    ..70 (0.53-0.94) for flavanones. An inverse association with total flavone and flavanone intake was observed for squamous cell carcinoma but not adenocarcinoma. In conclusion, low flavonoid intake from food may increase lung cancer risk...
  13. doi request reprint Changing mortality in congenital heart disease
    Paul Khairy
    Adult Congenital Heart Center, Montreal Heart Institute, University of Montreal, Quebec, Canada
    J Am Coll Cardiol 56:1149-57. 2010
    ..This study sought to characterize temporal trends in all-cause mortality in patients with congenital heart disease (CHD)...
  14. doi request reprint Are physicians with better clinical skills on licensing examinations less likely to prescribe antibiotics for viral respiratory infections in ambulatory care settings?
    Genevieve Cadieux
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
    Med Care 49:156-65. 2011
    ..Effective patient-physician communication is critical to address this problem. Recognizing the importance of physician communication skills, licensure examinations were reformed in the United States and Canada to evaluate these skills...
  15. ncbi request reprint Specialized adult congenital heart disease care: the impact of policy on mortality
    Darren Mylotte
    McGill Adult Unit for Congenital Heart Disease, McGill University Health Centre, Montreal, Canada D M, R I I, J T, A M Department of Epidemiology and Biostatistics, McGill University, Montreal, Canada L P, M A Division of General Internal Medicine, Department of Medicine, McGill University, Montreal, Canada L P Division of Clinical Epidemiology, Research Institute McGill University Health Center, Montreal, Canada L P, M A Department of Cardiology, Montreal Heart Institute, Universite de Montreal, Montreal, Canada P K and Stollery Children s Hospital and University of Alberta, Edmonton, Alberta, Canada A S M
    Circulation 129:1804-12. 2014
    ..Clinical guidelines recommend specialized care for adult congenital heart disease (ACHD) patients. In reality, few patients receive such dedicated care. We sought to examine the impact of specialized care on ACHD patient mortality...
  16. ncbi request reprint Assessing the cumulative effects of exposure to selected benzodiazepines on the risk of fall-related injuries in the elderly
    Marie Pierre Sylvestre
    Research Centre of CHUM, Montréal and Department of Social and Preventive Medicine, Universite de Montreal, Montreal, Quebec, Canada
    Int Psychogeriatr 24:577-86. 2012
    ..However, it is unclear if the risks vary across the products and how they depend on the pattern of use and dosage. Specifically, the possibility of cumulative effects of past benzodiazepine use has not been thoroughly investigated...
  17. ncbi request reprint Early consultation with a rheumatologist for RA: does it reduce subsequent use of orthopaedic surgery?
    Debbie Ehrmann Feldman
    CRIR, IRSPUM, Universite de Montreal, Montreal, Quebec H3C 3J7, Canada
    Rheumatology (Oxford) 52:452-9. 2013
    ..Our objective was to determine whether a reduced rate of orthopaedic surgery was evident for persons with RA who saw a rheumatologist early in the disease course...
  18. ncbi request reprint Predictors of adherence to an integrated multimodal program for fibromyalgia
    Patricia L Dobkin
    Department of Medicine, McGill University, Montreal, Quebec, Canada
    J Rheumatol 35:2255-64. 2008
    ..To describe treatment adherence to a multimodal integrated program for patients with fibromyalgia (FM), identify predictors of adherence to treatment recommendations, and examine the relationship between adherence and patient outcomes...
  19. doi request reprint 12-month cognitive outcomes of major and minor depression in older medical patients
    Ling Han
    Department of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada
    Am J Geriatr Psychiatry 16:742-51. 2008
    ..To examine the temporal relationship between depression diagnoses and cognitive function in older medical patients...
  20. doi request reprint Different outcomes for different health measures in immigrants: evidence from a longitudinal analysis of the National Population Health Survey (1994-2006)
    Maninder Singh Setia
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, H3A 1A2, Canada
    J Immigr Minor Health 14:156-65. 2012
    ..Though, non-white immigrant women were less likely to have severe psychological distress through this 12 year period, they were the ones most likely to rate their health as poor...
  21. ncbi request reprint Accuracy of conventional and marginal structural Cox model estimators: a simulation study
    Yongling Xiao
    McGill University, Canada
    Int J Biostat 6:Article 13. 2010
    ..Furthermore, we propose two novel normalized weights with the goal of reducing the MSM estimators' variability. The performance of the normalized weights is evaluated alongside the usual unstabilized and stabilized weights...
  22. pmc Association between risk factors for injurious falls and new benzodiazepine prescribing in elderly persons
    Gillian Bartlett
    Department of Family Medicine, McGill University, 515 517 Pine Avenue West, Montreal, Quebec, Canada
    BMC Fam Pract 10:1. 2009
    ..The objective of this study is to assess if some of the risk factors for falls are associated with new benzodiazepine prescriptions in elderly persons...
  23. doi request reprint Self-rated health in Canadian immigrants: analysis of the Longitudinal Survey of Immigrants to Canada
    Maninder Singh Setia
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
    Health Place 17:658-70. 2011
    ..Thus, women from countries lower on the development index appear at greater risk of poor SRH, and should be at the forefront of public health programmes aimed at new immigrants in Canada...
  24. doi request reprint Bootstrap-based methods for estimating standard errors in Cox's regression analyses of clustered event times
    Yongling Xiao
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada H3A 1A2
    Stat Med 29:915-23. 2010
    ..We also apply the proposed bootstrap methods to obtain confidence bands around flexible estimates of time-dependent effects in a real-life analysis of cluster event times...
  25. doi request reprint Relative survival multistate Markov model
    Ella Huszti
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada
    Stat Med 31:269-86. 2012
    ....
  26. ncbi request reprint Physician scores on a national clinical skills examination as predictors of complaints to medical regulatory authorities
    Robyn Tamblyn
    Department of Medicine, McGill University, Montreal, Quebec, Canada
    JAMA 298:993-1001. 2007
    ..To address this problem, licensure assessment has been reformed in Canada and the United States, including a national standardized assessment of patient-physician communication and clinical history taking and examination skills...
  27. ncbi request reprint Association between erectile function and lower urinary tract symptoms in patients treated with permanent seed prostate brachytherapy
    Daniel Taussky
    Department of Radiation Oncology, University of Montreal Medical Centre CHUM, Montreal, Quebec, Canada
    Can J Urol 17:5259-64. 2010
    ....
  28. doi request reprint Flexible modeling of the cumulative effects of time-dependent exposures on the hazard
    Marie Pierre Sylvestre
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, 1020 Pine Avenue West, Montreal, Que, Canada H3A 1A2
    Stat Med 28:3437-53. 2009
    ..We validated the method in simulations and applied it to re-assess the association between exposure to a psychotropic drug and fall-related injuries in the elderly...
  29. pmc The development and evaluation of an integrated electronic prescribing and drug management system for primary care
    Robyn Tamblyn
    Department of Epidemiology and Biostatistics, McGill University, Morrice House, 1140 Pine Avenue West, Montreal, Quebec, Canada H3A 1A3
    J Am Med Inform Assoc 13:148-59. 2006
    ..To develop and evaluate the acceptability and use of an integrated electronic prescribing and drug management system (MOXXI) for primary care physicians...
  30. ncbi request reprint Delay in consultation with specialists for persons with suspected new-onset rheumatoid arthritis: a population-based study
    Debbie Ehrmann Feldman
    Université de Montréal and Public Health Department of Montréal, Montreal, Quebec, Canada
    Arthritis Rheum 57:1419-25. 2007
    ..We wished to determine whether patients suspected of having new-onset RA in Québec consulted with a rheumatologist, to document any delay in these consultations, and to determine factors associated with prompt consultation...
  31. doi request reprint Analysis of willingness to pay for implantable cardioverter-defibrillator therapy
    Dominika Nowakowska
    Centre Hospitalier de l Université de Montréal Research Centre, Montreal, Quebec, Canada
    Am J Cardiol 107:423-7. 2011
    ..In conclusion, ICD recipients would be willing to pay a substantial amount for a replacement ICD. Considering the expensive price of the device, ICD recipients value favorably the benefits provided by the ICD...
  32. ncbi request reprint Modeling cumulative dose and exposure duration provided insights regarding the associations between benzodiazepines and injuries
    Michal Abrahamowicz
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
    J Clin Epidemiol 59:393-403. 2006
    ..We propose new methods for modeling various aspects of medication use history and employment of them to assess the adverse effects of selected benzodiazepines...
  33. ncbi request reprint Evaluation of the use of an integrated drug information system by primary care physicians for vulnerable population
    Yuko Kawasumi
    Department of Epidemiology and Biostatistics, McGill University, and Division of Clinical Epidemiology, Royal Victoria Hospital, Montreal, Quebec H3A1A3, Canada
    Int J Med Inform 77:98-106. 2008
    ..To investigate whether an electronic prescribing and integrated drug information system was more likely to be used by primary care physicians for patients of low socioeconomic (SES) patients...
  34. pmc Access to health-care in Canadian immigrants: a longitudinal study of the National Population Health Survey
    Maninder Singh Setia
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada
    Health Soc Care Community 19:70-9. 2011
    ..02, 95% C.I.: 1.00-1.04). Visible minority female immigrants were least likely to report an unmet healthcare need. In general, there is little evidence that immigrants have worse access to health-care than the Canadian-born population...
  35. doi request reprint Valvular operations in patients with congenital heart disease: increasing rates from 1988 to 2005
    Raluca Ionescu-Ittu
    McGill Adult Unit for Congenital Heart Disease Excellence MAUDE Unit, McGill University Health Centre, Montreal, Quebec, Canada
    Ann Thorac Surg 90:1563-9. 2010
    ..We hypothesized that changes in rates of congenital, valvular, and noncongenital surgical operations in congenital heart patients varied with age and disease severity over the last two decades...
  36. pmc Convergence of body mass index of immigrants to the Canadian-born population: evidence from the National Population Health Survey (1994-2006)
    Maninder Singh Setia
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada
    Eur J Epidemiol 24:611-23. 2009
    ..These results indicate that the loss of 'healthy immigrant effect' with regard to convergence of BMI to Canadian levels may not be experienced equally by all immigrants in Canada...
  37. doi request reprint Analysis of multiple exposures: an empirical comparison of results from conventional and semi-bayes modeling strategies
    Franco Momoli
    Department of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada
    Epidemiology 21:144-51. 2010
    ..The optimal strategy remains uncertain, and it is unclear to what extent different reasonable approaches influence findings. We provide an empirical comparison of results from several modeling strategies...
  38. doi request reprint A weighted Cox model for modelling time-dependent exposures in the analysis of case-control studies
    Karen Leffondre
    Department of Social and Preventive Medicine, University of Montreal, Montreal, Canada
    Stat Med 29:839-50. 2010
    ..The investigated weighted Cox model is a potential alternative method to analyse matched or unmatched population-based case-control studies with time-dependent exposures...
  39. ncbi request reprint Determinants of discordance between patients and physicians in their assessment of lupus disease activity
    Jim C Yen
    Division of Clinical Epidemiology, The McGill University Health Centre, Montreal, Quebec, Canada
    J Rheumatol 30:1967-76. 2003
    ..We evaluated different methods for quantifying patient-physician discordance and identified factors associated with discordance in the assessment of lupus disease activity...
  40. ncbi request reprint Classification of patterns of delirium severity scores over time in an elderly population
    Marie Pierre Sylvestre
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Canada
    Int Psychogeriatr 18:667-80. 2006
    ..To describe and classify individual trajectories of 15-day changes in delirium severity...
  41. doi request reprint A prediction score for maternal mortality in Senegal and Mali
    Cyrille Huchon
    International Health Unit, Centre de recherche du Centre Hospitalier de l Universite de Montreal, Montreal, Quebec, Canada
    Obstet Gynecol 121:1049-56. 2013
    ..To develop and validate a maternal mortality score to identify patients at risk of in-hospital death in developing countries...
  42. doi request reprint Extreme maternal education and preterm birth: time-to-event analysis of age and nativity-dependent risks
    Nathalie Auger
    Institut National de Sante Publique du Quebec, Montreal, Quebec, Canada
    Ann Epidemiol 23:1-6. 2013
    ..We sought to determine how very high educational attainment is associated with PTB, and to assess differences by maternal age and nativity...
  43. doi request reprint Treatment effect estimates varied depending on the definition of the provider prescribing preference-based instrumental variables
    Raluca Ionescu-Ittu
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada
    J Clin Epidemiol 65:155-62. 2012
    ..We compared the estimates obtained with different provider-based IVs in a real-life observational comparative drug effectiveness study...
  44. doi request reprint Availability of body art facilities and body art piercing do not predict hepatitis C acquisition among injection drug users in Montreal, Canada: Results from a cohort study
    Julie Bruneau
    CRCHUM, Centre Hospitalier de l Universite de Montreal, Montreal, Quebec, Canada
    Int J Drug Policy 21:477-84. 2010
    ..Cross-sectional associations suggest that body art piercing (BAP) is a risk factor for hepatitis C (HCV) infection among injection drug users. The temporal basis of the relationship has not been established...
  45. ncbi request reprint Bias-variance trade-off in pharmacoepidemiological studies using physician-preference-based instrumental variables: a simulation study
    Raluca Ionescu-Ittu
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada
    Pharmacoepidemiol Drug Saf 18:562-71. 2009
    ..We assessed, in simulations, how the performance of the IV estimates depends on the strength of this instrument...
  46. ncbi request reprint Bronchial artery embolization in adults with cystic fibrosis: impact on the clinical course and survival
    Vincent Vidal
    Department of Radiology, Hopital Timone, Marseille, France, and Department of Radiology, Centre Hospitalier de l Universite de Montreal, Quebec, Canada
    J Vasc Interv Radiol 17:953-8. 2006
    ..The objective of this retrospective study was to evaluate respiratory function, survival, and hemoptysis-free survival in adult patients with cystic fibrosis treated for hemoptysis with BAE...
  47. pmc Trends in human immunodeficiency virus incidence and risk behavior among injection drug users in montreal, Canada: a 16-year longitudinal study
    Julie Bruneau
    Centre de Recherche du CHUM, Centre Hospitalier de l Universite de Montreal, Montreal, Quebec, Canada
    Am J Epidemiol 173:1049-58. 2011
    ..In conclusion, HIV incidence has declined in this cohort, with an acceleration of the reduction in HIV transmission after 2000...
  48. ncbi request reprint Association between licensure examination scores and practice in primary care
    Robyn Tamblyn
    Department of Medicine, McGill University, Morrice House, 1140 Pine Ave W, Montreal, Quebec, Canada H3A 1A3
    JAMA 288:3019-26. 2002
    ..Standards for licensure are designed to provide assurance to the public of a physician's competence to practice. However, there has been little assessment of the relationship between examination scores and subsequent practice performance...
  49. ncbi request reprint Mortality rates in elderly patients who take different angiotensin-converting enzyme inhibitors after acute myocardial infarction: a class effect?
    Louise Pilote
    The Montreal General Hospital, Jewish General Hospital, and McGill University, Montreal, Quebec, Canada
    Ann Intern Med 141:102-12. 2004
    ..However, existing data from trials do not address whether all ACE inhibitors benefit patients similarly...
  50. ncbi request reprint Delirium predicts 12-month mortality
    Jane McCusker
    Department of Clinical Epidemiology and Community Studies, St Mary s Hospital Center, 3830 Lacombe Ave, Room 2508, Montreal, Quebec, Canada H3T 1M5
    Arch Intern Med 162:457-63. 2002
    ..This study aimed to determine the independent effects of presence of delirium, type of delirium (incident vs prevalent), and severity of delirium symptoms on 12-month mortality among older medical inpatients...
  51. ncbi request reprint Maintenance of exercise in women with fibromyalgia
    Patricia L Dobkin
    The McGill University Health Centre, McGill University, Montreal, Quebec, Canada
    Arthritis Rheum 53:724-31. 2005
    ..To identify predictors of maintenance of exercise for women with fibromyalgia (FM)...
  52. ncbi request reprint A proportional hazards model with time-dependent covariates and time-varying effects for analysis of fetal and infant death
    Robert W Platt
    Department of Pediatrics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 160:199-206. 2004
    ..Modeling post-LMP mortality eliminates the crossover paradox for race and maternal smoking in a single statistical model...
  53. ncbi request reprint Flexible modeling of exposure-response relationship between long-term average levels of particulate air pollution and mortality in the American Cancer Society study
    Michal Abrahamowicz
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
    J Toxicol Environ Health A 66:1625-54. 2003
    ..It was concluded that flexible modeling yields new insights about the effect of long-term air pollution on mortality...
  54. ncbi request reprint Adherence during an individualized home based 12-week exercise program in women with fibromyalgia
    Patricia L Dobkin
    Department of Medicine, McGill University, Montreal, Quebec, Canada
    J Rheumatol 33:333-41. 2006
    ..In this prospective study we examined predictors for adherence to stretching and aerobic exercises in women provided with an individualized home based program...
  55. ncbi request reprint Predictors of functional decline in hospitalized elderly patients: a systematic review
    Jane McCusker
    Department of Clinical Epidemiology and Community Studies, St Mary s Hospital, McGill University, Montreal, Quebec, Canada
    J Gerontol A Biol Sci Med Sci 57:M569-77. 2002
    ..This article will systematically review the methodological characteristics and results of studies of variables and indices that predict functional decline in older hospitalized patients...
  56. ncbi request reprint A 5-year prospective assessment of the risk associated with individual benzodiazepines and doses in new elderly users
    Robyn Tamblyn
    Department of Medicine, McGill University, Montreal, Quebec, Canada
    J Am Geriatr Soc 53:233-41. 2005
    ..To determine the risk of injury associated with the new use of individual benzodiazepines and dosage regimens in the elderly...
  57. ncbi request reprint Bias due to aggregation of individual covariates in the Cox regression model
    Michal Abrahamowicz
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 160:696-706. 2004
    ....
  58. ncbi request reprint Factors associated with pattern of care before surgery for breast cancer in Quebec between 1992 and 1997
    Ningyan Shen
    Division of Clinical Epidemiology, McGill University Health Center, Montreal, Quebec, Canada
    Med Care 41:1353-66. 2003
    ..Understanding the determinants of waiting time is essential to develop optimum interventions to reduce delay...
  59. ncbi request reprint Modeling smoking history: a comparison of different approaches
    Karen Leffondre
    Department of Epidemiology and Biostatistics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 156:813-23. 2002
    ..4) When estimating the effects of time since cessation or age at initiation, it is still useful to use cigarette-years, because it reduces multicollinearity...
  60. ncbi request reprint Patient-physician discordance in fibromyalgia
    Patricia L Dobkin
    Division of Clinical Epidemiology, McGill University Health Centre, Montreal, Quebec, Canada
    J Rheumatol 30:1326-34. 2003
    ..We investigated this phenomenon to identify demographic, clinical, and psychosocial factors associated with patient-physician discordance on physical functioning, well being, and satisfaction with the office visit...
  61. pmc Brain tumours and cigarette smoking: analysis of the INTERPHONE Canada case-control study
    Stephen Vida
    Centre de Recherche, Centre Hospitalier de l Universite de Montreal CHUM, Montreal, Quebec, Canada
    Environ Health 13:55. 2014
    ..There is conflicting evidence regarding the associations between cigarette smoking and glioma or meningioma. Our purpose is to provide further evidence on these possible associations...
  62. doi request reprint Evidence of subgroup-specific treatment effect in the absence of an overall effect: is there really a contradiction?
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada Division of Clinical Epidemiology, McGill University Health Centre, Montreal, QC, Canada
    Pharmacoepidemiol Drug Saf 22:1178-88. 2013
    ..However, this argument was based entirely on point estimates and ignored sampling error and statistical inference...
  63. doi request reprint Flexible modeling of the effects of continuous prognostic factors in relative survival
    Amel Mahboubi
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada H3A 1A1
    Stat Med 30:1351-65. 2011
    ..To illustrate the new insights offered by the proposed model, we apply it to re-assess the effects of patient age and of secular trends on disease-related mortality in colon cancer...
  64. ncbi request reprint Simulations showed that validation of database-derived diagnostic criteria based on a small subsample reduced bias
    Michal Abrahamowicz
    Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
    J Clin Epidemiol 60:600-9. 2007
    ..To evaluate alternative approaches to correct for bias due to inaccurate diagnostic criteria in database studies of associations...
  65. ncbi request reprint Updated risk factor values and the ability of the multivariable risk score to predict coronary heart disease
    Igor Karp
    Department of Epidemiology and Biostatistics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 160:707-16. 2004
    ..The results suggest that coronary risk assessment can be improved by utilizing updated risk factors and that the optimal frequency of updating may vary across subpopulations...
  66. ncbi request reprint Modifiable risk factors associated with clearance of type-specific cervical human papillomavirus infections in a cohort of university students
    Harriet Richardson
    Department of Oncology, McGill University, 546 Pine Avenue West, Montreal, Quebec, Canada H2W 1S6
    Cancer Epidemiol Biomarkers Prev 14:1149-56. 2005
    ....
  67. ncbi request reprint Gestational age-dependent risk factors for preterm birth: associations with maternal education and age early in gestation
    Nathalie Auger
    Institut National de Sante Publique du Quebec, Montreal, Canada Research Centre of the University of Montréal Hospital Centre, Montreal, Canada Department of Social and Preventive Medicine, University of Montreal, Montreal, Canada Electronic address
    Eur J Obstet Gynecol Reprod Biol 176:132-6. 2014
    ..We sought to evaluate if associations between two major risk factors (maternal education and age) and PTB depend on gestational age at delivery...
  68. ncbi request reprint Comparison of algorithms to generate event times conditional on time-dependent covariates
    Marie Pierre Sylvestre
    Department of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada
    Stat Med 27:2618-34. 2008
    ..The PAs also allowed more flexibility in the specification of the marginal distributions of event times and required less calibration...
  69. ncbi request reprint The incidence of first-episode schizophrenia-spectrum psychosis in adolescents and young adults in montreal: an estimate from an administrative claims database
    Kelly K Anderson
    Department of Epidemiology, McGill University, Montreal, Quebec
    Can J Psychiatry 57:626-33. 2012
    ..We sought to obtain a population-based estimate of the incidence of first-episode schizophrenia-spectrum psychosis (SSP) among adolescents and young adults in Montreal...
  70. ncbi request reprint Joint estimation of time-dependent and non-linear effects of continuous covariates on survival
    Michal Abrahamowicz
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Que, Canada H3A 1A2
    Stat Med 26:392-408. 2007
    ..Applications in cancer epidemiology illustrate how the product model may yield new insights about the role of prognostic factors...
  71. ncbi request reprint A population-based analysis of the class effect of beta-blockers after myocardial infarction
    Stephane Rinfret
    Division of Cardiology, Department of Medicine, Centre Hospitalier de l Universite de Montreal, Montreal, Quebec, Canada
    Am Heart J 153:224-30. 2007
    ..Long-term treatment with beta-blockers reduces mortality after acute myocardial infarction (AMI). Whether beta-blockers exert a class effect is unknown...
  72. ncbi request reprint The temporal relationship between depression symptoms and cognitive functioning in older medical patients--prospective or concurrent?
    Ling Han
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Canada
    J Gerontol A Biol Sci Med Sci 61:1319-23. 2006
    ..The objective of this study, using repeated measures over a 12-month period, was to examine the short-term temporal relationship between depressive symptoms and cognitive impairment...
  73. ncbi request reprint Children and adults with congenital heart disease lost to follow-up: who and when?
    Andrew S Mackie
    McGill Adult Unit for Congenital Heart Disease Excellence, McGill University, Montreal, Quebec, Canada
    Circulation 120:302-9. 2009
    ..We sought to determine the proportion of children and young adults with CHD receiving outpatient cardiology care and to identify predictors of lack of follow-up...
  74. ncbi request reprint Autoantibodies and microvascular damage are independent predictive factors for the progression of Raynaud's phenomenon to systemic sclerosis: a twenty-year prospective study of 586 patients, with validation of proposed criteria for early systemic sclerosi
    Martial Koenig
    Notre Dame Hospital, Centre Hospitalier de l Universite de Montreal, Montreal, Quebec, Canada
    Arthritis Rheum 58:3902-12. 2008
    ....
  75. doi request reprint Willingness to pay to eliminate the risk of restenosis following percutaneous coronary intervention: a contingent valuation
    Jason R Guertin
    Centre Hospitalier de Université de Montréal Research Centre, Universite de Montreal, Quebec, Canada
    Circ Cardiovasc Qual Outcomes 4:46-52. 2011
    ..Percutaneous coronary intervention (PCI) remains limited by the risk of restenosis. Patients' perceptions of the health benefits and value of avoiding restenosis are incompletely known...
  76. doi request reprint A randomized clinical trial of exercise to alleviate postpartum depressed mood
    Deborah Da Costa
    Division of Clinical Epidemiology, McGill University Health Centre, Montreal, Quebec, H3A 1A2 Canada
    J Psychosom Obstet Gynaecol 30:191-200. 2009
    ..To evaluate whether a 12-week home-based exercise program is more effective than usual care for alleviating depressive symptomology in the postpartum...
  77. ncbi request reprint Factors influencing treatment decisions in patients with low risk prostate cancer referred to a brachytherapy clinic
    Daniel Taussky
    Department of Radiation, University of Montreal Medical Center CHUM, Montreal, Quebec, Canada
    Can J Urol 15:4415-20. 2008
    ....
  78. ncbi request reprint Measuring differences between patients' and physicians' health perceptions: the patient-physician discordance scale
    Maida J Sewitch
    Faculte de Medecine, Universite de Montreal C P 6128, Succ Centre Ville, Montreal, Quebec, Canada H3C 3J7
    J Behav Med 26:245-64. 2003
    ..Patient and physician ratings demonstrated moderate-to-high concurrent validity. Study limitations and directions for future research with PPDS are discussed...
  79. ncbi request reprint Using generalized additive models to reduce residual confounding
    Andrea Benedetti
    McGill University, Department of Epidemiology and Biostatistics, Canada
    Stat Med 23:3781-801. 2004
    ..Overall, our results suggest that the use of GAM to reduce residual confounding offers several improvements over conventional parametric modelling...
  80. ncbi request reprint Evaluation of Cox's model and logistic regression for matched case-control data with time-dependent covariates: a simulation study
    Karen Leffondre
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
    Stat Med 22:3781-94. 2003
    ..The magnitude of the latter bias is proportional to the true effect, suggesting that an improved manipulation of the risk sets may eliminate, or at least reduce, the bias...
  81. ncbi request reprint The McGill ingestive skills assessment predicts time to death in an elderly population with neurogenic dysphagia: preliminary evidence
    Heather C Lambert
    School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
    Dysphagia 20:123-32. 2005
    ..These findings support the validity of the MISA for use with elderly individuals with neurogenic ingestive skill loss residing in long-term care facilities...
  82. ncbi request reprint Longitudinal patterns of new Benzodiazepine use in the elderly
    Gillian Bartlett
    Department of Medicine, McGill University, Quebec, Canada
    Pharmacoepidemiol Drug Saf 13:669-82. 2004
    ..To characterize longitudinal patterns of Benzodiazepine use in the elderly...
  83. pmc Individual and institutional determinants of caesarean section in referral hospitals in Senegal and Mali: a cross-sectional epidemiological survey
    Valérie Briand
    Research Centre of CHU Sainte Justine, Montreal, Canada
    BMC Pregnancy Childbirth 12:114. 2012
    ..Two years after implementing the free-CS policy, we assessed the non-financial factors associated with caesarean section (CS) in women managed by referral hospitals in Senegal and Mali...
  84. pmc Effect of a community oriented problem based learning curriculum on quality of primary care delivered by graduates: historical cohort comparison study
    Robyn Tamblyn
    McGill University, Montreal, QC, Canada H3A 1A3
    BMJ 331:1002. 2005
    ....
  85. doi request reprint Recent corticosteroid use and recent disease activity: independent determinants of coronary heart disease risk factors in systemic lupus erythematosus?
    Igor Karp
    University of Montreal, the Montreal University Health Center, and McGill University, Montreal, Quebec, Canada
    Arthritis Rheum 59:169-75. 2008
    ..In particular, the causal roles of corticosteroid therapy and SLE disease activity, and whether their putative effects are mediated through conventional risk factors, remain unclear...
  86. ncbi request reprint Predictors of health status in women with fibromyalgia: a prospective study
    Patricia L Dobkin
    Division of Clinical Epidemiology, McGill University Health Center, Montreal, Quebec, Canada
    Int J Behav Med 13:101-8. 2006
    ..06). These findings highlight the need for multidisciplinary interventions that target psychological distress, coping, and comorbidity in patients with FM...
  87. ncbi request reprint Survival bias associated with time-to-treatment initiation in drug effectiveness evaluation: a comparison of methods
    Zheng Zhou
    Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
    Am J Epidemiol 162:1016-23. 2005
    ..Method 5 used a time-dependent variable for treatment initiation. Methods 4 and 5 better controlled for survival bias and yielded similar results, suggesting a 20% risk reduction of recurrent myocardial infarction or death events...
  88. ncbi request reprint The natural history of type-specific human papillomavirus infections in female university students
    Harriet Richardson
    Departments of Oncology, McGill University, Montreal, Quebec, H2W 1S6 Canada
    Cancer Epidemiol Biomarkers Prev 12:485-90. 2003
    ..Whereas the majority of episodes with a type-specific HPV infection cleared within 2 years, there were many women who were either reinfected with a new HPV genotype or presumably experienced reactivation of their initial infection...
  89. ncbi request reprint Occurrence of cervical infection with multiple human papillomavirus types is associated with age and cytologic abnormalities
    Marie Claude Rousseau
    Department of Oncology, McGill University, Montreal, Quebec, Canada
    Sex Transm Dis 30:581-7. 2003
    ..Few aspects of the occurrence of infections with multiple HPV types have been described. Since the immunity conferred by vaccines is type-specific, the epidemiology of such coinfections needs to be addressed...
  90. ncbi request reprint Statistical measures were proposed for identifying longitudinal patterns of change in quantitative health indicators
    Karen Leffondre
    Department of Epidemiology and Biostatistics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
    J Clin Epidemiol 57:1049-62. 2004
    ..To propose statistical measures to identify different longitudinal patterns of change in quantitative health indicators...
  91. ncbi request reprint Predictors of cervical coinfection with multiple human papillomavirus types
    Marie Claude Rousseau
    Department of Oncology, McGill University, Montreal, Quebec, H2W 4507 010 1S6 Canada
    Cancer Epidemiol Biomarkers Prev 12:1029-37. 2003
    ..Our results suggest that the risk factor profile for HPV coinfection among HPV-infected women shares several similarities with risk factors for any HPV infection...
  92. ncbi request reprint A comparison of prospective and retrospective evaluations of the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index for systemic lupus erythematosus
    Sasha Bernatsky
    Division of Clinical Epidemiology, Montreal General Hospital Research Institute, Montreal, Quebec, Canada
    J Rheumatol 32:820-3. 2005
    ..To evaluate the comparability of prospective and retrospective evaluations of the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SLICC/ACR DI)...
  93. ncbi request reprint Patient nonadherence to medication in inflammatory bowel disease
    Maida J Sewitch
    Groupe de recherche interdisciplinaire en sante, University of Montreal, Montreal, Quebec, Canada
    Am J Gastroenterol 98:1535-44. 2003
    ..The aim of this study was to identify determinants of nonadherence to medication in outpatients with established inflammatory bowel disease (IBD)...