Oksana Pugach, PhD


Dr. Oksana Pugach joined the Institute's Methodology Research Core in May 2012 after earning her doctoral degree in biostatistics from the University of Illinois at Chicago. She has provided data management and statistical support to IHRP health research projects since 2005.

In her dissertation, Dr. Pugach developed a location-scale mixed-effects model for bivariate continuous outcomes, a relatively new methodology of modeling longitudinal bivariate data with heterogeneous within- and between-subject variances. She holds a master's degree in computer science and has over 10 years of experience in data management in public health-related projects.

Research Interests

Bivariate mixed-effects location-scale models with specific application to a longitudinal adolescent smoking study. Also multilevel mixed-effects regression models with survey data.

Recent and Noteworthy Publications

Slater S, Pugach O, Lin W, Bontu A. If you build It will they come? Does involving community groups in playground renovations affect park utilization and physical activity? Environ Behav. 2016;48(1):246-265. [See abstract.]

Gordon HS, Pugach O, Berbaum ML, Ford ME. Examining patients’ trust in physicians and the VA healthcare system in a prospective cohort followed for six-months after an exacerbation of heart failure. Patient Educ Couns. 2014 Nov;97(2):173-9. [See abstract.]

Pugach O, Hedeker D, Mermelstein R. A bivariate mixed-effects location-scale model with application to ecological momentary assessment (EMA) data. Health Serv Outcomes Res Methodol. 2014 Dec;14(4):194-212. [See abstract.]

Rimkus L, Powell LM, Zenk SN, Han E, Ohri-Vachaspati P, Pugach O, Barker DC, Resnick EA, Quinn CM, Myllyluoma J, Chaloupka FJ. Development and reliability testing of a food store observation form. J Nutr Educ Behav. 2013 Nov-Dec;45(6):540-8. [See abstract.]

Powell LM, Han E, Zenk SN, Khan T, Quinn CM, Gibbs KP, et al. Field validation of secondary commercial data sources on the retail food outlet environment in the U.S. Health Place. 2011 Sep;17(5):1122-31. [See abstract.]

Houser-Marko L, Curry SJ, Mermelstein RJ, Emery S, Pugach O. A comparison of mandated versus volunteer adolescent participants in youth tobacco cessation programs. Addict Behav. 2011 Sep;36(9):937-40. [See abstract.]

Han E, Powell LM, Pugach O. The heterogenous relationship of food stamp participation with body, mass: Quantile regression model. Food Policy. 2011 Aug;36(4):499-506. [See abstract.]

Demirtas H, Amatya A, Pugach O, Cursio J, Shi F, Morton D, Doganay B. Accuracy versus convenience: a simulation-based comparison of two continuous imputation models for incomplete ordinal longitudinal clinical trials data. Stat Interface. 2009;2:449-456.[See abstract.]

Curry SJ, Sporer AK, Pugach O, Campbell RT, Emery S. Use of tobacco cessation treatments among young adult smokers: 2005 National Health Interview Survey. Am J Public Health. 2007 Aug;97(8):1464-9.[See abstract.]

Honors and Awards

Spring 2012 Award for Travel, Research, and External Courses from the UIC Division of Epidemiology and Biostatistics