Li Qiang is an associate professor of the Department of Epidemiology and Biostatistics at the School of Public Health, Xi’an Jiaotong University. Degree received: 2009 (Doctor of Medicine). He joined the Medical School of Xi'an Jiaotong University in 1997. He is mainly engaged in the teaching of biostatistics and epidemiology. Current research field (direction): chronic disease epidemiology, health data analysis. Member of the Nutrition Epidemiology Branch of Chinese Nutrition.