Research on the influencing factors of the health status of the elderly population in China Research on the influencing factors of default risk of Chinese listed companies Research on the influencing factors and mechanism of service innovation performance 并列题名：Research on the influencing factors of default risk of Chinese listed companies Research on the influencing factors and economic effects of China's credit rating Research on the influencing factors and effects of undertaking industrial transfer in the old industrial cities in central China Research on the influencing factors and supportive policies of fertility research on the sex ratio at birth of the minority population Research on the influencing factors and economic consequences of annual report risk information disclosure