Jing Song is a health services researcher with analytic expertise. She has extensive experience in physical activity assessment and statistical methodology. She has analyzed survey and clinical data using various statistical packages and developed and managed analytical databases. As an analytic expert, she has gained national stature as an expert in the processing and analysis of physical activity data from accelerometer monitoring. She has processed and documented two sets of physical activity data obtained from accelerometer monitoring of the Osteoarthritis Initiative national cohort study. In addition, she has provided statistical and editorial support for multiple grant submissions and manuscript preparations.