Liam M O'Brien

Summary

Affiliation: Colby College
Country: USA

Publications

  1. pmc Statistical adjustments for brain size in volumetric neuroimaging studies: some practical implications in methods
    Liam M O'Brien
    Department of Mathematics and Statistics, Colby College, Waterville, ME 04901, USA
    Psychiatry Res 193:113-22. 2011
  2. doi request reprint Impact of a school health coordinator intervention on health-related school policies and student behavior
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    J Sch Health 80:176-85. 2010
  3. pmc Regression models for the analysis of longitudinal Gaussian data from multiple sources
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    Stat Med 24:1725-44. 2005
  4. pmc Maximum likelihood estimation of marginal pairwise associations with multiple source predictors
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    Biom J 48:860-75. 2006
  5. ncbi request reprint Regression analysis of multiple source and multiple informant data from complex survey samples
    Nicholas J Horton
    Department of Mathematics, Smith College, College Lane, Northampton, MA 01063, USA
    Stat Med 23:2911-33. 2004
  6. ncbi request reprint A marginalized pattern-mixture model for longitudinal binary data when nonresponse depends on unobserved responses
    Kenneth J Wilkins
    Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115, USA
    Biostatistics 8:297-305. 2007
  7. ncbi request reprint A simple imputation method for longitudinal studies with non-ignorable non-responses
    Molin Wang
    Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115, USA
    Biom J 48:302-18. 2006
  8. ncbi request reprint A hybrid model for nonignorable dropout in longitudinal binary responses
    Kenneth J Wilkins
    Department of Biostatistics, Harvard School of Public Health, 655 Huntington Avenue, Boston, Massachusetts 02115, USA
    Biometrics 62:168-76. 2006
  9. ncbi request reprint Estimation in regression models for longitudinal binary data with outcome-dependent follow-up
    Garrett M Fitzmaurice
    Department of Biostatistics, Harvard School of Public Health, 655 Huntington Avenue and Brigham and Women s Hospital, Boston, MA, USA
    Biostatistics 7:469-85. 2006
  10. ncbi request reprint Pseudo-likelihood methods for longitudinal binary data with non-ignorable missing responses and covariates
    Michael Parzen
    Department of Decision and Information Analysis, Goizueta Business School, USA
    Stat Med 25:2784-96. 2006

Detail Information

Publications21

  1. pmc Statistical adjustments for brain size in volumetric neuroimaging studies: some practical implications in methods
    Liam M O'Brien
    Department of Mathematics and Statistics, Colby College, Waterville, ME 04901, USA
    Psychiatry Res 193:113-22. 2011
    ....
  2. doi request reprint Impact of a school health coordinator intervention on health-related school policies and student behavior
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    J Sch Health 80:176-85. 2010
    ..This study evaluates the impact of the Healthy Maine Partnerships SHC (HMPSHC) intervention on school policies and student risk behaviors after its first 5 years...
  3. pmc Regression models for the analysis of longitudinal Gaussian data from multiple sources
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    Stat Med 24:1725-44. 2005
    ..The methods are illustrated with an example of multiple informant data arising from a longitudinal interventional trial in psychiatry...
  4. pmc Maximum likelihood estimation of marginal pairwise associations with multiple source predictors
    Liam M O'Brien
    Department of Mathematics, Colby College, 5838 Mayflower Hill, Waterville, ME 04901, USA
    Biom J 48:860-75. 2006
    ..We also explore the asymptotic relative efficiency of ML and GEE methods in this setting...
  5. ncbi request reprint Regression analysis of multiple source and multiple informant data from complex survey samples
    Nicholas J Horton
    Department of Mathematics, Smith College, College Lane, Northampton, MA 01063, USA
    Stat Med 23:2911-33. 2004
    ..Finally, the methods are illustrated using data from two studies: the Stirling County Study and the Eastern Connecticut Child Survey...
  6. ncbi request reprint A marginalized pattern-mixture model for longitudinal binary data when nonresponse depends on unobserved responses
    Kenneth J Wilkins
    Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115, USA
    Biostatistics 8:297-305. 2007
    ..The paper concludes with application of the method to data from a contraceptive clinical trial with substantial dropout...
  7. ncbi request reprint A simple imputation method for longitudinal studies with non-ignorable non-responses
    Molin Wang
    Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115, USA
    Biom J 48:302-18. 2006
    ..An appealing feature of the proposed method is that it can be readily implemented using existing, widely-available statistical software. The method is illustrated using longitudinal data on obesity from the MCRF study...
  8. ncbi request reprint A hybrid model for nonignorable dropout in longitudinal binary responses
    Kenneth J Wilkins
    Department of Biostatistics, Harvard School of Public Health, 655 Huntington Avenue, Boston, Massachusetts 02115, USA
    Biometrics 62:168-76. 2006
    ..The article concludes by applying the approach to data from a randomized clinical trial comparing two doses of a contraceptive...
  9. ncbi request reprint Estimation in regression models for longitudinal binary data with outcome-dependent follow-up
    Garrett M Fitzmaurice
    Department of Biostatistics, Harvard School of Public Health, 655 Huntington Avenue and Brigham and Women s Hospital, Boston, MA, USA
    Biostatistics 7:469-85. 2006
    ..Finally, we illustrate the main results using data from a longitudinal observational study that explored the cardiotoxic effects of doxorubicin chemotherapy for the treatment of acute lymphoblastic leukemia in children...
  10. ncbi request reprint Pseudo-likelihood methods for longitudinal binary data with non-ignorable missing responses and covariates
    Michael Parzen
    Department of Decision and Information Analysis, Goizueta Business School, USA
    Stat Med 25:2784-96. 2006
    ..to handle binary responses and possibly missing time-varying covariates. The method is illustrated using data from the Six Cities study, a longitudinal study of the health effects of air pollution...
  11. ncbi request reprint Parameter estimation in longitudinal studies with outcome-dependent follow-up
    Stuart R Lipsitz
    Department of Biometry and Epidemiology, Medical University of South Carolina, Charleston 29425, USA
    Biometrics 58:621-30. 2002
    ..1995, New England Journal of Medicine 332, 1738-1743) that explored the cardiotoxic effects of doxorubicin chemotherapy for the treatment of acute lymphoblastic leukemia in children...
  12. ncbi request reprint A pattern-mixture model for longitudinal binary responses with nonignorable nonresponse
    Jolene Birmingham
    Department of Biostatistics, Harvard School of Public Health, 655 Huntington Avenue, Boston, Massachusetts 02115, USA
    Biometrics 58:989-96. 2002
    ..The methodology is illustrated using data from a longitudinal study of obesity in children...
  13. ncbi request reprint Simple adjustments for randomized trials with nonrandomly missing or censored outcomes arising from informative covariates
    Stuart G Baker
    Biometry Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD, USA
    Biostatistics 7:29-40. 2006
    ..We discuss the computations for univariate, survival, and longitudinal outcomes, and present an application involving a randomized study of dual versus triple combinations of HIV-1 reverse transcriptase inhibitors...
  14. pmc Cognitive performance in childhood and early adult illness: a prospective cohort study
    Laurie T Martin
    Department of Epidemiology, Harvard School of Public Health, Boston, USA
    J Epidemiol Community Health 58:674-9. 2004
    ..To evaluate whether cognitive performance in childhood is an early determinant of adult illness...
  15. ncbi request reprint Adolescent suicidal ideation as predictive of psychopathology, suicidal behavior, and compromised functioning at age 30
    Helen Z Reinherz
    Simmons Longitudinal Study, Simmons College School of Social Work, 300 The Fenway, Boston, MA 02115, USA
    Am J Psychiatry 163:1226-32. 2006
    ....
  16. ncbi request reprint Trends in overweight from 1980 through 2001 among preschool-aged children enrolled in a health maintenance organization
    Juhee Kim
    Department of Society and Human Development and Health, Harvard School of Public Health, Boston, MA 02115, USA
    Obesity (Silver Spring) 14:1107-12. 2006
    ..To examine overweight trends over a 22-year period among preschool-aged children from primarily middle-income families enrolled in a health maintenance organization...
  17. ncbi request reprint A note on permutation tests for variance components in multilevel generalized linear mixed models
    Garrett M Fitzmaurice
    Harvard Medical School, Boston, MA, USA
    Biometrics 63:942-6. 2007
    ..Results from a simulation study suggest that it is more powerful than tests based on mixtures of chi-square distributions. The proposed test is illustrated using data on the familial aggregation of sleep disturbance...
  18. ncbi request reprint Change in prevalence of psychiatric disorders from ages 21 to 30 in a community sample
    Jennifer L Tanner
    Rutgers University, Institute for Health, Health Care Policy, and Aging Research, New Brunswick, New Jersey, USA
    J Nerv Ment Dis 195:298-306. 2007
    ..Results of this study have implications for mental health service planning in emerging adulthood...
  19. ncbi request reprint To dichotomize or not to dichotomize?
    Caitlin Ravichandran
    Laboratory for Psychiatric Biostatistics, McLean Hospital, Belmont, MA, USA
    Nutrition 24:610-1. 2008
  20. pmc Incidence and remission rates of overweight among children aged 5 to 13 years in a district-wide school surveillance system
    Juhee Kim
    Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA
    Am J Public Health 95:1588-94. 2005
    ..To monitor annual changes in weight status, we determined incidence and remission rates of overweight among school-aged children with longitudinal school-based surveillance...
  21. ncbi request reprint Socioeconomic status in childhood and the lifetime risk of major depression
    Stephen E Gilman
    Department of Health and Social Behavior, Harvard School of Public Health, Boston, Massachusetts 02115, USA
    Int J Epidemiol 31:359-67. 2002
    ..In this study, we test the hypotheses that low childhood SES predicts an increased risk of adult depression and contributes to a higher risk of depression among females...