Daniel Westreich

Summary

Affiliation: Duke University Medical Center
Country: USA

Publications

  1. pmc The role of the c-statistic in variable selection for propensity score models
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC, USA
    Pharmacoepidemiol Drug Saf 20:317-20. 2011
  2. pmc The table 2 fallacy: presenting and interpreting confounder and modifier coefficients
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, DUMC3967, Durham, NC 27710, USA
    Am J Epidemiol 177:292-8. 2013
  3. pmc Prevalent pregnancy, biological sex, and virologic response to antiretroviral therapy
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    J Acquir Immune Defic Syndr 60:489-94. 2012
  4. pmc Incidence of pregnancy after initiation of antiretroviral therapy in South Africa: a retrospective clinical cohort analysis
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    Infect Dis Obstet Gynecol 2012:917059. 2012
  5. pmc A simulation study of finite-sample properties of marginal structural Cox proportional hazards models
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC, USA
    Stat Med 31:2098-109. 2012
  6. pmc The parametric g-formula to estimate the effect of highly active antiretroviral therapy on incident AIDS or death
    Daniel Westreich
    Department of Obstetrics and Gynecology, School of Medicine and Duke Global Health Institute, Duke University, Durham, NC, USA
    Stat Med 31:2000-9. 2012
  7. pmc Effectiveness and safety of 30 mg versus 40 mg stavudine regimens: a cohort study among HIV-infected adults initiating HAART in South Africa
    Mhairi Maskew
    Clinical HIV Research Unit, Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
    J Int AIDS Soc 15:13. 2012
  8. pmc Prevalent tuberculosis and mortality among HAART initiators
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, Durham, North Carolina, USA
    AIDS 26:770-3. 2012
  9. pmc Berkson's bias, selection bias, and missing data
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    Epidemiology 23:159-64. 2012
  10. pmc Pregnancy and virologic response to antiretroviral therapy in South Africa
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
    PLoS ONE 6:e22778. 2011

Detail Information

Publications20

  1. pmc The role of the c-statistic in variable selection for propensity score models
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC, USA
    Pharmacoepidemiol Drug Saf 20:317-20. 2011
    ..Variable selection based on prior subject matter knowledge, empirical observation, and sensitivity analysis is preferable and avoids many of these problems...
  2. pmc The table 2 fallacy: presenting and interpreting confounder and modifier coefficients
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, DUMC3967, Durham, NC 27710, USA
    Am J Epidemiol 177:292-8. 2013
    ....
  3. pmc Prevalent pregnancy, biological sex, and virologic response to antiretroviral therapy
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    J Acquir Immune Defic Syndr 60:489-94. 2012
    ..Pregnancy is a common indication for initiation of highly active antiretroviral therapy (HAART) in sub-Saharan Africa. Our objective was to evaluate how pregnancy at treatment initiation predicts virologic response to HAART...
  4. pmc Incidence of pregnancy after initiation of antiretroviral therapy in South Africa: a retrospective clinical cohort analysis
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    Infect Dis Obstet Gynecol 2012:917059. 2012
    ..Little is known about rates of incident pregnancy among HIV-positive women initiating highly active antiretroviral therapy (HAART)...
  5. pmc A simulation study of finite-sample properties of marginal structural Cox proportional hazards models
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC, USA
    Stat Med 31:2098-109. 2012
    ..Under realistic scenarios, marginal structural Cox proportional hazards models performed according to expectations based on large-sample theory and provided accurate estimates of the hazard ratio...
  6. pmc The parametric g-formula to estimate the effect of highly active antiretroviral therapy on incident AIDS or death
    Daniel Westreich
    Department of Obstetrics and Gynecology, School of Medicine and Duke Global Health Institute, Duke University, Durham, NC, USA
    Stat Med 31:2000-9. 2012
    ..The parametric g-formula is a viable alternative to inverse probability weighting of marginal structural models and g-estimation of structural nested models for the analysis of complex longitudinal data...
  7. pmc Effectiveness and safety of 30 mg versus 40 mg stavudine regimens: a cohort study among HIV-infected adults initiating HAART in South Africa
    Mhairi Maskew
    Clinical HIV Research Unit, Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
    J Int AIDS Soc 15:13. 2012
    ....
  8. pmc Prevalent tuberculosis and mortality among HAART initiators
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, Durham, North Carolina, USA
    AIDS 26:770-3. 2012
    ..In reanalysis, treatment for tuberculosis at time of HAART initiation remained unassociated with increased risks of all-cause mortality, with adjusted hazard ratios ranging from 1.00 to 1.09...
  9. pmc Berkson's bias, selection bias, and missing data
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, NC 27710, USA
    Epidemiology 23:159-64. 2012
    ..Although dealing with missing data always relies on strong assumptions about unobserved variables, the intuitions built with simple examples can provide a better understanding of approaches to missing data in real-world situations...
  10. pmc Pregnancy and virologic response to antiretroviral therapy in South Africa
    Daniel Westreich
    Department of Obstetrics and Gynecology, Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
    PLoS ONE 6:e22778. 2011
    ..We examined the effect of incident pregnancy after HAART initiation on virologic response to HAART...
  11. pmc Incident pregnancy and time to death or AIDS among HIV-positive women receiving antiretroviral therapy
    Daniel Westreich
    Department of Obstetrics and Gynecology and Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
    PLoS ONE 8:e58117. 2013
    ..Little is known about the impact of pregnancy on response to highly active antiretroviral therapy (HAART) in sub-Saharan Africa. We examined the effect of incident pregnancy after HAART initiation on clinical response to HAART...
  12. pmc Illustrating bias due to conditioning on a collider
    Stephen R Cole
    Department of Epidemiology, UNC Gillings School of Global Public Health, Chapel Hill, NC, USA
    Int J Epidemiol 39:417-20. 2010
    ..In both examples, conditioning on the common effect imparts an association between two otherwise independent variables; we call this selection bias...
  13. pmc Doubly robust estimation of causal effects
    Michele Jonsson Funk
    Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
    Am J Epidemiol 173:761-7. 2011
    ..Cary, North Carolina) for doubly robust estimation, available for download at http://www.unc.edu/~mfunk/dr/...
  14. pmc Assessing the effect of HIV counselling and testing on HIV acquisition among South African youth
    Nora E Rosenberg
    aDepartment of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA bAfrica Centre for Health and Population Studies, University of KwaZulu Natal, Mtubatuba, South Africa cDepartment of Obstetrics and Gynecology dGlobal Health Institute, Duke University, Durham, North Carolina eDepartment of Global Health and Population, Harvard School of Public Health, Boston, Massachusetts fDepartment of Medicine, School of Medicine gDepartment of Health Behavior and Health Education, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA hAcademic Unit of Human Development and Health, University of Southampton, Southampton, UK
    AIDS 27:2765-73. 2013
    ..HIV counselling and testing (HCT) is designed to promote HIV prevention. However the impact of HCT on HIV acquisition has never been assessed among youth. We assess the impact of HCT on HIV acquisition among South African youth...
  15. ncbi request reprint Assessing the effect of hormonal contraception on HIV acquisition in observational data: challenges and recommended analytic approaches
    Chelsea B Polis
    aOffice of Population and Reproductive Health, United States Agency for International Development USAID, Washington, DC bDepartment of Epidemiology, University of North Carolina, Chapel Hill cDepartment of Obstetrics and Gynecology and Global Health Institute, Duke University, Durham, North Carolina dVaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center eDepartment of Global Health, University of Washington, Seattle, Washington, USA Chelsea B Polis, Daniel Westreich, Jennifer E Balkus and Renee Heffron contributed equally to the writing of the article
    AIDS 27:S35-43. 2013
    ..Studies to date have used inconsistent approaches and generated a body of evidence that is complex and challenging to interpret...
  16. pmc Tenofovir use and pregnancy among women initiating HAART
    Mhairi Maskew
    Health Economics and Epidemiology Research Office, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
    AIDS 26:2393-7. 2012
    ..Here, our objective was to determine among HIV-positive women whether use of tenofovir at HAART initiation or thereafter is associated with subsequent changes in incidence of pregnancy...
  17. pmc Male circumcision and HIV prevention: ethical, medical and public health tradeoffs in low-income countries
    Stuart Rennie
    Department of Dental Ecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
    J Med Ethics 33:357-61. 2007
  18. ncbi request reprint Loss to Clinic and Five-Year Mortality among HIV-Infected Antiretroviral Therapy Initiators
    Jessie K Edwards
    Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
    PLoS ONE 9:e102305. 2014
    ..The modestly higher mortality among patients who were lost-to-clinic implies that when we necessarily censor these patients in studies of time-varying exposures, we are likely to incur at most a modest selection bias. ..
  19. pmc Representation of women and pregnant women in HIV research: a limited systematic review
    Daniel Westreich
    Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
    PLoS ONE 8:e73398. 2013
    ..HIV-related outcomes may be affected by biological sex and by pregnancy. Including women in general and pregnant women in particular in HIV-related research is important for generalizability of findings...
  20. pmc Early-life soy exposure and age at menarche
    Margaret A Adgent
    Department of Epidemiology, Gillings School of Global Public Health, UNC Chapel Hill, Chapel Hill, NC, USA
    Paediatr Perinat Epidemiol 26:163-75. 2012
    ..Because soy formula use is common in some populations, this subtle association with menarche warrants more in-depth evaluation in future studies...