Photo of Pugach, Oksana

Oksana Pugach, PhD

Biostatistician, IHRP Methodology Research Core

Lecturer, Division of Epidemiology and Biostatistics, UIC School of Public Health


Building & Room:

424 Westside Research Office Bldg.


1747 West Roosevelt Road Chicago, IL 60608

Office Phone:

(312) 413-9397


Dr. Oksana Pugach is a biostatistician in the Institute's Methodology Research Core and an IHRP Fellow.

Dr. Pugach has provided data management and statistical support to multidisciplinary IHRP research teams since 2005.

She earned her doctoral degree in biostatistics from the University of Illinois at Chicago in 2012. 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.

Dr. Pugach also holds a master's degree in computer science and has almost 10 years' 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.

Selected Publications

Del Rios M, Weber J, Pugach O, Nguyen H, Campbell T, Islam S, et al. Large urban center improves out-of-hospital cardiac arrest survival. Resuscitation. 2019 Apr 19. doi: 10.1016/j.resuscitation.2019.04.019. [See abstract

Martin M, Rosales G, Sandoval A, Lee H, Pugach O, Avenetti D, Alvarez G, Diaz A. What really happens in the home: a comparison of parent-reported and observed tooth brushing behaviors for young children. BMC Oral Health. 2019 Feb 21;19(1):35. doi: 10.1186/s12903-019-0725-5.

Mosnaim GS, Weinstein SM, Pugach O, Rosales G, Roy A, Walton S, Martin MA. Design and baseline characteristics of a low-income urban cohort of children with asthma: The Asthma Action at Erie Trial. Contemp Clin Trials. 2019 Apr;79:55-65. doi: 10.1016/j.cct.2019.02.006.

Buscemi J, Pugach O, Springfield S, Jang J, Tussing-Humphreys L, Schiffer L, Stolley MR, Fitzgibbon ML. Associations between fiber intake and Body Mass Index (BMI) among African-American women participating in a randomized weight loss and maintenance trial. Eat Behav. 2018 Apr;29:48-53. doi: 10.1016/j.eatbeh.2018.02.005.

Freeman VL, Boylan EE, Pugach O, Mclafferty SL, Tossas-Milligan KY, Watson KS, Winn RA. A geographic information system-based method for estimating cancer rates in non-census defined geographical areas. Cancer Causes Control. 2017 Oct;28(10):1095-1104. doi: 10.1007/s10552-017-0941-8.

Pugach O, Cannon DS, Weiss RB, Hedeker D, Mermelstein RJ. Classification Tree Analysis as a Method for Uncovering Relations Between CHRNA5A3B4 and CHRNB3A6 in Predicting Smoking Progression in Adolescent Smokers. Nicotine Tob Res. 2017 Apr 1;19(4):410-416. doi: 10.1093/ntr/ntw197.

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.]

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.]