Stanley Xu

Summary

Affiliation: Kaiser Permanente
Country: USA

Publications

  1. ncbi request reprint Four different study designs to evaluate vaccine safety were equally validated with contrasting limitations
    Jason M Glanz
    Clinical Research Unit, Kaiser Permanente, P O Box 378006, Colorado, Denver, CO 80237 8066, USA
    J Clin Epidemiol 59:808-18. 2006
  2. pmc A scan statistic for identifying optimal risk windows in vaccine safety studies using self-controlled case series design
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA
    Stat Med 32:3290-9. 2013
  3. pmc Impact of the introduction of pneumococcal conjugate vaccine on immunization coverage among infants
    Nancy D Lin
    Department of Ambulatory Care and Prevention, Harvard Pilgrim Health Care, Harvard Medical School, Boston, MA, USA
    BMC Pediatr 5:43. 2005
  4. ncbi request reprint Use of stabilized inverse propensity scores as weights to directly estimate relative risk and its confidence intervals
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO 80111, USA
    Value Health 13:273-7. 2010
  5. doi request reprint Stakeholder benefit from depression disease management: differences by rurality?
    Stanley Xu
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA
    J Behav Health Serv Res 38:114-21. 2011
  6. doi request reprint Identifying optimal risk windows for self-controlled case series studies of vaccine safety
    Stanley Xu
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, U S A
    Stat Med 30:742-52. 2011
  7. ncbi request reprint Analysis of longitudinal count data with serial correlation
    Stanley Xu
    Kaiser Permanente Colorado, P O Box 378066, Denver, Colorado 80237, USA
    Biom J 49:416-28. 2007
  8. doi request reprint Increasingly restrictive definitions of hyperkalemia outcomes in a database study: effect on incidence estimates
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO 80237, USA
    Pharmacoepidemiol Drug Saf 19:19-25. 2010
  9. ncbi request reprint Risk of immune thrombocytopenic purpura after measles-mumps-rubella immunization in children
    Eric K France
    Department of Preventive Medicine, Kaiser Pemanente Colorado, Denver, CO 80231, USA
    Pediatrics 121:e687-92. 2008
  10. ncbi request reprint Safety of trivalent inactivated influenza vaccine in children 6 to 23 months old
    Simon J Hambidge
    Clinical Research Unit, Kaiser Permanente Colorado, Denver, CO 80237 8066, USA
    JAMA 296:1990-7. 2006

Detail Information

Publications32

  1. ncbi request reprint Four different study designs to evaluate vaccine safety were equally validated with contrasting limitations
    Jason M Glanz
    Clinical Research Unit, Kaiser Permanente, P O Box 378006, Colorado, Denver, CO 80237 8066, USA
    J Clin Epidemiol 59:808-18. 2006
    ..We conducted a simulation study to empirically compare four study designs [cohort, case-control, risk-interval, self-controlled case series (SCCS)] used to assess vaccine safety...
  2. pmc A scan statistic for identifying optimal risk windows in vaccine safety studies using self-controlled case series design
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA
    Stat Med 32:3290-9. 2013
    ..This approach uses the maximum likelihood ratio test based on fixed-effects models, which has been used for analyzing data from self-controlled case series design in addition to conditional Poisson models...
  3. pmc Impact of the introduction of pneumococcal conjugate vaccine on immunization coverage among infants
    Nancy D Lin
    Department of Ambulatory Care and Prevention, Harvard Pilgrim Health Care, Harvard Medical School, Boston, MA, USA
    BMC Pediatr 5:43. 2005
    ..The purpose of this study was to evaluate whether introduction of PCV affected immunization coverage for recommended childhood vaccinations among 13-month olds in four large provider groups...
  4. ncbi request reprint Use of stabilized inverse propensity scores as weights to directly estimate relative risk and its confidence intervals
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO 80111, USA
    Value Health 13:273-7. 2010
    ..Currently, variance estimation requires additional work depending on type of outcomes. Our goal is to demonstrate a statistical approach to directly obtain appropriate estimates of variance of the main effects in regression models...
  5. doi request reprint Stakeholder benefit from depression disease management: differences by rurality?
    Stanley Xu
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA
    J Behav Health Serv Res 38:114-21. 2011
    ..Given the limited sample size, further research may be needed to determine whether health plans who elect to cover depression care management costs will receive comparable economic benefits in the rural and urban enrollees they insure...
  6. doi request reprint Identifying optimal risk windows for self-controlled case series studies of vaccine safety
    Stanley Xu
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, U S A
    Stat Med 30:742-52. 2011
    ..Both simulation studies and vaccine safety data applications show that our proposed approach is effective in identifying medium and long-risk windows...
  7. ncbi request reprint Analysis of longitudinal count data with serial correlation
    Stanley Xu
    Kaiser Permanente Colorado, P O Box 378066, Denver, Colorado 80237, USA
    Biom J 49:416-28. 2007
    ..The model is applied to Epileptic Seizure data and Primary Care Visits Data. Missing and unequally spaced observations are handled naturally with this model...
  8. doi request reprint Increasingly restrictive definitions of hyperkalemia outcomes in a database study: effect on incidence estimates
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO 80237, USA
    Pharmacoepidemiol Drug Saf 19:19-25. 2010
    ....
  9. ncbi request reprint Risk of immune thrombocytopenic purpura after measles-mumps-rubella immunization in children
    Eric K France
    Department of Preventive Medicine, Kaiser Pemanente Colorado, Denver, CO 80231, USA
    Pediatrics 121:e687-92. 2008
    ..The measles-mumps-rubella vaccine has been associated with immune thrombocytopenia purpura in 2 small studies...
  10. ncbi request reprint Safety of trivalent inactivated influenza vaccine in children 6 to 23 months old
    Simon J Hambidge
    Clinical Research Unit, Kaiser Permanente Colorado, Denver, CO 80237 8066, USA
    JAMA 296:1990-7. 2006
    ..Beginning with the winter season of 2004-2005, influenza vaccination has been recommended for all children 6 to 23 months old in the United States. However, its safety in young children has not been adequately studied in large populations...
  11. pmc The positive predictive value of a hyperkalemia diagnosis in automated health care data
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO 80237 8066, USA
    Pharmacoepidemiol Drug Saf 19:1204-8. 2010
    ..Our objectives were to determine performance of coded hyperkalemia diagnosis at identifying (1) clinically evident hyperkalemia and (2) serum potassium>6 mmol/L...
  12. pmc Extension of Kaplan-Meier methods in observational studies with time-varying treatment
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO 80111, USA
    Value Health 15:167-74. 2012
    ..The objective of this research was to use adjusted Kaplan-Meier estimates and modified log-rank and Wilcoxon tests to examine the effect of a treatment that varies over time in an observational study...
  13. ncbi request reprint Comparison of epidemiologic methods for active surveillance of vaccine safety
    David L McClure
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA
    Vaccine 26:3341-5. 2008
    ..We performed a simulation study to compare four study designs [(matched-cohort, vaccinated-only (risk-interval) cohort, case-control, and self-controlled case-series (SCCS)] in the context of vaccine safety active surveillance...
  14. ncbi request reprint Intensification of antihyperglycemic therapy among patients with incident diabetes: a Surveillance Prevention and Management of Diabetes Mellitus (SUPREME-DM) study
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO, USA University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, CO, USA
    Pharmacoepidemiol Drug Saf 23:699-710. 2014
    ..We characterized the first intensification the year after oral antihyperglycemic medication initiation among incident diabetes patients...
  15. pmc Diabetes and drug-associated hyperkalemia: effect of potassium monitoring
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO 80237, USA
    J Gen Intern Med 25:326-33. 2010
    ..Renin-angiotensin-aldosterone system (RAAS) inhibitors are associated with hyperkalemia, but there is little evidence demonstrating patients who receive potassium monitoring have a lower rate of hyperkalemia...
  16. ncbi request reprint Estimating the effects of time-varying exposures in observational studies using Cox models with stabilized weights adjustment
    Stanley Xu
    Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA University of Colorado, Denver, CO, USA
    Pharmacoepidemiol Drug Saf 23:812-8. 2014
    ..The objective of this paper is to develop a Cox model stratified by event times with stabilized weights (SWs) adjustment to examine the effect of time-varying treatment in observational studies...
  17. ncbi request reprint Association between parental depression and children's health care use
    Marion R Sills
    Department of Pediatrics, University of Colorado at Denver and Health Sciences Center, Denver, Colorado 80218, USA
    Pediatrics 119:e829-36. 2007
    ..The objective of this study was to determine the association between parental depression and pediatric health care use patterns...
  18. ncbi request reprint Continuous time Markov models for binary longitudinal data
    Richard H Jones
    Department of Preventive Medicine and Biometrics, University of Colorado Health Sciences Center, Campus Box B119, Denver, CO 80262, USA
    Biom J 48:411-9. 2006
    ..These models are applied to an intervention study designed to reduce children's sun exposure...
  19. ncbi request reprint Effect of using different modes to administer the AUDIT-C on identification of hazardous drinking and acquiescence to trial participation among injured patients
    Allan Graham
    Kaiser Permanente Health Plan of Colorado, Denver, CO 80262, USA
    Alcohol Alcohol 42:423-9. 2007
    ..We compared the effect of three different modes of questionnaire administration on screening for hazardous drinking and acquiescence to trial participation...
  20. doi request reprint Association of online patient access to clinicians and medical records with use of clinical services
    Ted E Palen
    Institute for Health Research, Kaiser Permanente Colorado, 10065 E Harvard Ave, Ste 300, Denver, CO 80231, USA
    JAMA 308:2012-9. 2012
    ..Prior studies suggest that providing patients with online access to health records and e-mail communication with physicians may substitute for traditional health care services...
  21. ncbi request reprint Impact of maternal influenza vaccination during pregnancy on the incidence of acute respiratory illness visits among infants
    Eric K France
    Department of Preventive Medicine and Clinical Research Unit, Kaiser Permanente Colorado, Denver, CO 80231, USA
    Arch Pediatr Adolesc Med 160:1277-83. 2006
    ..To determine whether influenza vaccination of pregnant women prevents visits for respiratory illness in their infants born during the influenza season...
  22. ncbi request reprint The frequency and behavioral outcomes of goal choices in the self-management of diabetes
    Paul A Estabrooks
    Clinical Research Unit, Kaiser Permanente Colorado, Aurora, CO, USA
    Diabetes Educ 31:391-400. 2005
    ....
  23. ncbi request reprint Health services use and health care costs of obese and nonobese individuals
    Marsha A Raebel
    Clinical Research Unit, Kaiser Permanente of Colorado, Denver, CO 80237, USA
    Arch Intern Med 164:2135-40. 2004
    ..Obesity has clinical and economic consequences. Few studies have compared health care resource utilization between age- and sex-matched obese and nonobese persons...
  24. ncbi request reprint Signal detection of adverse events with imperfect confirmation rates in vaccine safety studies using self-controlled case series design
    Stanley Xu
    The Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, 80231, USA
    Biom J 56:513-25. 2014
    ....
  25. ncbi request reprint Initial antihyperglycemic drug therapy among 241 327 adults with newly identified diabetes from 2005 through 2010: a surveillance, prevention, and management of diabetes mellitus (SUPREME-DM) study
    Marsha A Raebel
    Kaiser Permanente Colorado Institute for Health Research, Denver, CO, USA
    Ann Pharmacother 47:1280-91. 2013
    ..Among adults with incident diabetes, data are lacking about first antihyperglycemic initiation and whether medication choice aligns with recommendations...
  26. ncbi request reprint Increased risk of bleeding in patients on clopidogrel therapy after drug-eluting stents implantation: insights from the HMO Research Network-Stent Registry (HMORN-stent)
    Thomas T Tsai
    Denver VA Medical Center, Denver, CO 80220, USA
    Circ Cardiovasc Interv 3:230-5. 2010
    ..Little is known about the competing risk of bleeding from clopidogrel in "real world" clinical practice...
  27. ncbi request reprint Safety of the trivalent inactivated influenza vaccine among children: a population-based study
    Eric K France
    Clinical Research Unit, Kaiser Permanente Colorado, Denver, USA
    Arch Pediatr Adolesc Med 158:1031-6. 2004
    ..To our knowledge, there are no published population-based studies on the safety of the inactivated trivalent influenza vaccine among children...
  28. ncbi request reprint Effect of CME on primary care and OB/GYN treatment of breast masses
    David W Price
    Department of Education, Colorado Permanente Medical Group, Denver, CO 80237, USA
    J Contin Educ Health Prof 25:240-7. 2005
    ..CME program planners are being asked to move beyond assessments of knowledge to assessing the impact of CME on practice and patient outcomes...
  29. ncbi request reprint Telephone screening for hazardous drinking among injured patients seen in acute care clinics: feasibility study
    Carolyn DiGuiseppi
    University of Colorado School of Medicine, Colorado Injury Control Research Center, Denver, USA
    Alcohol Alcohol 41:438-45. 2006
    ....
  30. ncbi request reprint Differential effectiveness of depression disease management for rural and urban primary care patients
    Scott J Adams
    Western Interstate Commission for Higher Education WICHE Mental Health Program, Boulder, CO 80301 9752, USA
    J Rural Health 22:343-50. 2006
    ....
  31. ncbi request reprint Immunization registry-based recall for a new vaccine
    Matthew F Daley
    Department of Pediatrics, University of Colorado Health Sciences Center, The Children s Hospital, Denver 80218, USA
    Ambul Pediatr 2:438-43. 2002
    ..The extent to which immunization registry-based recall can increase immunization rates for a new vaccine has not been prospectively studied...