Faculty

About:

Educational History

1. University of New South Wales, Sydney, Australia B.Sc.(Psych)(Hons) 1979

2. University of Vermont, Burlington, Vermont

M.A. in Psychology, specializing in statistics & research methods 1987 Master's Thesis: The evaluation of intervention effects in time series data, using a generalized procedure based on a high order autoregressive noise model (Chairperson: Mun S. Son, Ph.D.)

Ph.D. in Psychology, specializing in statistics & research methods 1989 Doctoral Dissertation: Reduction of bias in an ROC curve when using linear discriminant analysis: An application of the bootstrap technique (Chairperson: Larry D. Haugh, Ph.D.)

Employment History

1. Associate Research Scientist, Department of Psychiatry, Columbia University. 1990-1991 Statistical analyst for large longitudinal epidemiological survey of use of licit and illicit drugs, and its relationship to demographic characteristics, attitudes and other behaviors. Principal Investigator: Denise Kandel, Ph.D.

2. Statistician & Director of Data Analysis, New York City Perinatal HIV Transmission Collaborative Study. 1991-2000 Statistical analyst & SAS programmer for a large CDC-funded epidemiological study of perinatal HIV transmission. Estimation of mother-infant HIV transmission rates in subpopulations, and determination of demographic, medical and behavioral risk factors for transmission. Principal Investigator: Donald Thea, M.D., M.P.H.

3. Epidemiological Consultant, City of New York Dept. of Health. 1997-2000 Consulting and statistical analysis of epidemiological data relating to pediatric HIV in New York. Client: Pauline Thomas, M.D.

4. Epidemiological Consultant, City of New York Dept. of Health. 1998-2003 Consulting and statistical analysis of epidemiological data relating to adult HIV in New York. Client: Judith Sackoff, Ph..D.

5. Senior Statistician/Associate Director, Scientific Computing Center, SUNY Downstate Medical Center. 2000-Present General biostatistical consulting for SUNY faculty & graduate students. Teaching biostatistics to undergraduate & graduate students, medical residents.

6. Adjunct Clinical Assistant Professor, School of Public Health, SUNY Downstate Medical Center. 2008-Present Teaching biostatistics to graduate students.

Research Interests:

• Methodology of longitudinal analysis of observational data
• Censored data and multivariate survival analysis techniques
• Hierarchical linear modelling
• Statistical methods for meta-analysis
• HIV epidemiology

Courses offered:

BIOS 5202 Regression analysis

Multiple linear regression modelling; interaction Curvilinear regression; data transformation Goodness of fit & diagnostics; Chow test; multicollinearity Nested models; predictor selection methods The general linear model; missing data Non-linear & piecewise regression Nonparametric regression Logistic regression: model & assumptions Logistic regression for matched case-control studies Censored data; proportional hazards regression Count data; Poisson regression Autocorrelation & longitudinal regression

BIOS 5203 Time series analysis

Introduction to time series; SAS ETS tutorial Traditional methods of smoothing & forecasting Basic (OLS) regression methods for model fitting & forecasting Curvilinear & dummy-variable regression; data transformation Exogenous series; Loess regression methods Autocorrelation & its implications; transforming data to fit OLS methods Introduction to ARIMA; stationarity, drift & trend ARIMA model identification; seasonal ARIMA models Multiple series; transfer functions Intervention effects in ARIMA GEE & mixed linear models for time series Multiple subjects: crossover studies Missing & unevenly spaced data

Selected publications:

Al-Ajam, M.R., Bizri, A.R., Mokhbat, J., Weedon, J. & Lutwick, L. (2006) Mucormycosis in the Eastern Mediterranean: a seasonal disease. Epidemiology and Infection, 134, 341-346.

Demas, P.A., Thea, D.M., Weedon, J. et al. (2005) Adherence to Zidovudine for the prevention of perinatal transmission in HIV-infected pregnant women: The impact of social network factors, side effects, and perceived treatment efficacy. Women & Health, 42, 99-115.

Reilly, J., Chin, B., Berkowitz, J., Weedon, J. & Avitable, M. (2004) Use of a state-wide administrative database in assessing a regional trauma system: The New York City experience. Journal of the American College of Surgeons, 198, 509-518.

Rothenberg, S.P., da Costa, M.P., Sequeira, J.M., Cracco, J., Roberts, J.L., Weedon, J., & Quadros, E.V. (2004) Autoantibodies against folate receptors in women with a pregnancy complicated by a neural-tube defect. New England Journal of Medicine, 350, 134-142.

Demas, P.A., Webber M.P., Schoenbaum, E.E., et al. (2002) Maternal Adherence to the Zidovudine Regimen for HIV-Exposed Infants to Prevent HIV Infection: A Preliminary Study. Pediatrics, 110, e35.

Zhu, M.M., Weedon, J., & Clark, L. (2000) Meta-analysis of the association of platelet glycoprotein IIIa P1A1/A2 polymorphism with myocardial infarction. American Journal of Cardiology, 86, 1000-1005.

Pliner, V., Weedon, J., Thomas, P.A., et al. (1998) Incubation Period of HIV-1 in perinatally infected children, AIDS, 12, 759-766.

Abrams, E.J., Weedon, J., Steketee, R.W. et al. (1998) Association of HIV viral load early in life with disease progression among HIV-infected infants. Journal of Infectious Diseases, 178, 101-108.

Bamji, M., Thea, D.M., Weedon, J., et al. (1996) Prospective study of human immunodeficiency virus 1-related disease among 512 infants born to infected women in New York City. Pediatric Infectious Disease Journal, 15, 891-898.

Thea, D., Lambert, G., Weedon, J., et al. (1996) Benefit of primary prophylaxis before 18 months of age in reducing the incidence of pneumocystis carinii pneumonia and early death in a cohort of 112 human immunodeficiency virus-infected infants. Pediatrics, 97, 59-64.

Matheson, P., Weedon, J., Cappelli, M., et al. (1995) Comparison of methods of estimating the mother-to-child transmission rate of human immunodeficiency virus type 1 (HIV-1). American Journal of Epidemiology, 142, 714-718.

Weedon, J., & Thomas, P.A. (1994) HIV Seroconversion Among High-Risk Women in New York City. Journal of the American Medical Association, 272, 432.

Thomas, P., Weedon, J., Krasinski, K., et al. (1994) Maternal Predictors of Perinatal Human Immunodeficiency Virus Transmission. Pediatric Infectious Disease Journal, 13, 489-495.