His research interests focus on biostatistics, statistical applications in biology and health sciences, chronic disease epidemiology and social-behavioral epidemiology (e.g., alcohol and substance use, cancer, diabetes and metabolic syndrome, depression and psychological distress), genetic epidemiology and statistical genetics/genomics (e.g., analysis of genome-wide association study (GWAS) and next generation sequencing (NGS) data). He has published over 100 scientific papers and book chapters, and serves on 7 peer-reviewed editorial boards.