Juned Siddique is an Associate Professor and Biostatistician in the Department of Preventive Medicine at Northwestern University Feinberg School of Medicine. His research efforts focus on developing statistical methods for handling incomplete or missing data. He applies these methods to a range of problems including rater bias, participant dropout, data harmonization in individual participant data analysis, and measurement error. He collaborates closely with lifestyle intervention researchers and has particular interests in the analysis of diet and physical activity data.