J J Koval

Summary

Affiliation: University of Western Ontario
Country: Canada

Publications

  1. ncbi request reprint Latent mixed Markov modelling of smoking transitions using Monte Carlo bootstrapping
    Haider R Mannan
    Health Indicators, Canadian Institute for Health Information, Toronto, Ontario, Canada
    Stat Methods Med Res 12:125-46. 2003
  2. pmc Socioeconomic status and non-fatal injuries among Canadian adolescents: variations across SES and injury measures
    Beth K Potter
    Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Canada
    BMC Public Health 5:132. 2005
  3. pmc Is there value in using physician billing claims along with other administrative health care data to document the burden of adolescent injury? An exploratory investigation with comparison to self-reports in Ontario, Canada
    Beth K Potter
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Canada
    BMC Health Serv Res 5:15. 2005
  4. pmc Understanding adolescent and young adult use of family physician services: a cross-sectional analysis of the Canadian Community Health Survey
    Bridget L Ryan
    Centre for Studies in Family Medicine, The University of Western Ontario, London, Ontario, Canada
    BMC Fam Pract 12:118. 2011
  5. ncbi request reprint The potential effectiveness of warning labels on cigarette packages: the perceptions of young adult Canadians
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, ON
    Can J Public Health 96:353-6. 2005
  6. ncbi request reprint Stress-coping and other psychosocial risk factors: a model for smoking in grade 6 students
    J J Koval
    University of Western Ontario, London, Canada
    Addict Behav 24:207-18. 1999
  7. ncbi request reprint Psychosocial variables in a cohort of students in grades 8 and 11: a comparison of current and never smokers
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
    Prev Med 39:1017-25. 2004
  8. doi request reprint Can young adult smoking status be predicted from concern about body weight and self-reported BMI among adolescents? Results from a ten-year cohort study
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
    Nicotine Tob Res 10:1449-55. 2008
  9. ncbi request reprint Models of the relationship of stress, depression, and other psychosocial factors to smoking behavior: a comparison of a cohort of students in grades 6 and 8
    J J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Canada
    Prev Med 30:463-77. 2000
  10. ncbi request reprint Nonresponse bias in a survey of Ontario dentists' infection control and attitudes concerning HIV
    G M McCarthy
    Division of Oral Biology, Faculty of Medicine and Dentistry, University of Western Ontario, London, Canada
    J Public Health Dent 57:59-62. 1997

Detail Information

Publications29

  1. ncbi request reprint Latent mixed Markov modelling of smoking transitions using Monte Carlo bootstrapping
    Haider R Mannan
    Health Indicators, Canadian Institute for Health Information, Toronto, Ontario, Canada
    Stat Methods Med Res 12:125-46. 2003
    ..For the other models, the manifest/latent transition probabilities and response probabilities (for the four-wave Waterloo study only) were tested to be nonstationary for both data sets...
  2. pmc Socioeconomic status and non-fatal injuries among Canadian adolescents: variations across SES and injury measures
    Beth K Potter
    Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Canada
    BMC Public Health 5:132. 2005
    ....
  3. pmc Is there value in using physician billing claims along with other administrative health care data to document the burden of adolescent injury? An exploratory investigation with comparison to self-reports in Ontario, Canada
    Beth K Potter
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Canada
    BMC Health Serv Res 5:15. 2005
    ....
  4. pmc Understanding adolescent and young adult use of family physician services: a cross-sectional analysis of the Canadian Community Health Survey
    Bridget L Ryan
    Centre for Studies in Family Medicine, The University of Western Ontario, London, Ontario, Canada
    BMC Fam Pract 12:118. 2011
    ....
  5. ncbi request reprint The potential effectiveness of warning labels on cigarette packages: the perceptions of young adult Canadians
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, ON
    Can J Public Health 96:353-6. 2005
    ..This study examines how Canadians in their 20s feel about the current graphic warning labels and their potential to prevent smoking and encourage quitting...
  6. ncbi request reprint Stress-coping and other psychosocial risk factors: a model for smoking in grade 6 students
    J J Koval
    University of Western Ontario, London, Canada
    Addict Behav 24:207-18. 1999
    ..0063) for males, whereas for females, mother smoking was the most important factor (p = .0001) followed by rebelliousness (p = .0102). Implications for design of prevention programs are discussed...
  7. ncbi request reprint Psychosocial variables in a cohort of students in grades 8 and 11: a comparison of current and never smokers
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
    Prev Med 39:1017-25. 2004
    ..The purpose of this study was to examine the utility of these cross-sectional models in accounting for current smoking as compared to never smoking when this cohort was in grades 8 and 11...
  8. doi request reprint Can young adult smoking status be predicted from concern about body weight and self-reported BMI among adolescents? Results from a ten-year cohort study
    John J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
    Nicotine Tob Res 10:1449-55. 2008
    ..115 and 1.095, respectively). These findings provide evidence of the longitudinal effect of perception of being overweight as an adolescent on smoking as a young adult and suggest possible ways of averting smoking behavior...
  9. ncbi request reprint Models of the relationship of stress, depression, and other psychosocial factors to smoking behavior: a comparison of a cohort of students in grades 6 and 8
    J J Koval
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Canada
    Prev Med 30:463-77. 2000
    ..In addition, the data were used to determine the set of risk factors for initiation of smoking most pertinent to the experience of the cohort...
  10. ncbi request reprint Nonresponse bias in a survey of Ontario dentists' infection control and attitudes concerning HIV
    G M McCarthy
    Division of Oral Biology, Faculty of Medicine and Dentistry, University of Western Ontario, London, Canada
    J Public Health Dent 57:59-62. 1997
    ..This study investigated late response and nonresponse bias in an HIV-related survey of dentists...
  11. ncbi request reprint Physician contact with older community patients: is there an association with physical fitness?
    R J Petrella
    Department of Family Medicine, Faculty of Medicine, University of Western Ontario, London, Canada
    Prev Med 29:571-6. 1999
    ..We hypothesized that physician contact would be associated with lower indices of physical fitness and that association would be similar to other known determinants of physician utilization...
  12. pmc Factors associated with refusal to treat HIV-infected patients: the results of a national survey of dentists in Canada
    G M McCarthy
    School of Dentistry, University of Western Ontario, London
    Am J Public Health 89:541-5. 1999
    ..This study investigated dentists refusal to treat patients who have HIV...
  13. ncbi request reprint Aerobic fitness in a population of independently living men and women aged 55-86 years
    D H Paterson
    Centre for Activity and Ageing, Faculty of Health Sciences, Department of Physiology, The University of Western Ontario, London, Canada
    Med Sci Sports Exerc 31:1813-20. 1999
    ..The purpose was to examine, for a subset of a large random survey of men and women, the age-related changes in the parameters of aerobic function, maximal oxygen consumption (VO2max), and ventilatory threshold (T(VE))...
  14. ncbi request reprint The role of age- and population-based differences in the attitudes, knowledge and infection control practices of Canadian dentists
    G M McCarthy
    School of Dentistry, University of Western Ontario, Canada
    Community Dent Oral Epidemiol 27:298-304. 1999
    ..To investigate age- and population-based differences in dentists' infection control practices and willingness and refusal to treat patients with HIV...
  15. ncbi request reprint A self-paced step test to predict aerobic fitness in older adults in the primary care clinic
    R J Petrella
    Departments of Family Medicine, Physical Medicine and Rehabilitation, Epidemiology and Biostatistics, School of Kinesiology, Faculty of Health Sciences, London, Ontario, Canada
    J Am Geriatr Soc 49:632-8. 2001
    ....
  16. ncbi request reprint Longitudinal tracking and retention in a school-based study on adolescent smoking: costs, variables, and smoking status
    C A Mills
    Dept of Epidemiology and Biostatistics, Morehouse School of Medicine, Canada
    J Sch Health 70:107-12. 2000
    ....
  17. ncbi request reprint Lung function in older humans: the contribution of body composition, physical activity and smoking
    C E Amara
    School of Kinesiology, University of Western Ontario, London, Canada
    Ann Hum Biol 28:522-36. 2001
    ..Individuals with a greater FFM and physical activity level tended to be associated with an above average lung function performance. The cross-sectional rate of decline in FEV1.0 determined from our model was approximately 12% per decade...
  18. ncbi request reprint Does a relationship exist between body weight, concerns about weight, and smoking among adolescents? An integration of the literature with an emphasis on gender
    Beth K Potter
    Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
    Nicotine Tob Res 6:397-425. 2004
    ..Possible explanations for these findings are discussed, and priorities for future research are identified...
  19. ncbi request reprint Do predisposing and family background characteristics modify or confound the relationship between drinking frequency and alcohol-related aggression? A study of late adolescent and young adult drinkers
    Samantha Wells
    Department of Epidemiology and Biostatistics, University of Western Ontario, Canada, and Centre for Addiction and Mental Health, 100 Collip Circle, Suite 200, London, ON, Canada, N6G 4X8
    Addict Behav 31:661-75. 2006
    ..In addition, the gender differences found in the present study highlight the need for more gender-focussed research on predictors of alcohol-related aggression, especially among adolescents and young adults...
  20. ncbi request reprint Compliance with recommended infection control procedures among Canadian dentists: results of a national survey
    G M McCarthy
    School of Dentistry, The University of Western Ontario, London, Canada
    Am J Infect Control 27:377-84. 1999
    ..The introduction of mandatory continuing education about IC may improve compliance with recommended IC procedures, which is important because of concerns related to transmission of bloodborne pathogens and drug-resistant microorganisms...
  21. ncbi request reprint Longitudinal study of determinants of dependence in an elderly population
    Donald H Paterson
    Canadian Center for Activity and Aging, The University of Western Ontario, London, Ontario, Canada
    J Am Geriatr Soc 52:1632-8. 2004
    ..To describe those factors, from the host of initial measures in ambulatory, independent older men and women, that were determinants of becoming dependent over an 8-year follow-up...
  22. ncbi request reprint Can primary care doctors prescribe exercise to improve fitness? The Step Test Exercise Prescription (STEP) project
    Robert J Petrella
    Department of Family Medicine, Faculties of Medicine, University of Western Ontario, London, Ontario, Canada
    Am J Prev Med 24:316-22. 2003
    ..Barriers include lack of skills and standard office instruments. Because primary care physicians have regular contact with a large proportion of the population, the impact of preventive health interventions may be great...
  23. doi request reprint Obstetric conditions and the placental weight ratio
    E M Macdonald
    Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Canada N6A 5C1 Electronic address
    Placenta 35:582-6. 2014
    ..To elucidate how obstetric conditions are associated with atypical placental weight ratios (PWR)s in infants born: (a) ≥37 weeks gestation; (b) at ≥33 but <37 weeks gestation; and (c) <33 weeks gestation...
  24. ncbi request reprint Influential observations in weighted analyses: examples from the National Longitudinal Survey of Children and Youth (NLSCY)
    Jennifer J Macnab
    Department of Epidemiology and Biostatistics, Faculty of Medecine and Dentistry, University of Western Ontario, London, Ontario, N6A 5C1, Canada
    Chronic Dis Can 26:1-8. 2005
    ..Researchers working with large national health surveys such as the NLSCY and the National Population Health Survey (NPHS) are advised to include a detailed influence analysis before any final conclusions are made...
  25. ncbi request reprint Drinking patterns, drinking contexts and alcohol-related aggression among late adolescent and young adult drinkers
    Samantha Wells
    Department of Epidemiology and Biostatistics, University of Western Ontario, Canada
    Addiction 100:933-44. 2005
    ..e. usual drinking locations, typical drinking companions and extent of peer drinking) confound or modify the relationship between HED and alcohol-related aggression or whether they predict alcohol-related aggression independently...
  26. ncbi request reprint Gender differences in the relationship between heavy episodic drinking, social roles, and alcohol-related aggression in a U.S. sample of late adolescent and young adult drinkers
    Samantha Wells
    Centre for Addiction and Mental Health, London, Ontario, Canada
    Am J Drug Alcohol Abuse 33:21-9. 2007
    ..A gender focus is required in future research on alcohol-related aggression...
  27. doi request reprint Identifying the determinants of childhood immunization in the Philippines
    Jennifer N Bondy
    Department of Epidemiology and Biostatistics, The University of Western Ontario, London, ON, Canada
    Vaccine 27:169-75. 2009
    ..To increase immunization coverage in the Philippines, knowledge transfer to mothers must improve...
  28. doi request reprint Informing the debate: rates of kidney transplantation in nations with presumed consent
    Lucy D Horvat
    University of Western Ontario, London University of Waterloo, Waterloo and University of Toronto, Toronto, Ontario, Canada
    Ann Intern Med 153:641-9. 2010
    ..The organ shortage has caused policymakers in many nations to debate the merits of adopting presumed consent legislation as a way to increase donor organ donation from deceased donors...
  29. ncbi request reprint Variables related to tobacco use among young adults: are there differences between males and females?
    Linda L Pederson
    Consultant for Research Triangle Institute, Atlanta, GA 30341 5533, USA
    Addict Behav 32:398-403. 2007
    ..Interventions for reducing smoking among young adults may be similar for males and females, a conclusion that differs from conclusions based on findings from younger age groups...