9.Jing‑jing Chang(#); Ying‑chun Chen(*); Hong‑xia Gao; Effect of inappropriate admissions on hospitalization performance in county hospitals: a cross‑sectional study in rural China；Cost Effectiveness and Resource Allocation, 2019.5.27, 17(2).

10.Dai Su(#); Yingchun Chen(*); Hongxia Gao; Is There a Dierence in the Utilisation of Inpatient Services Between Two Typical Payment Methods of Health Insurance? Evidence from the New Rural Cooperative Medical Scheme in China；International Journal Environment Research and Public Health, 2019.4.19, 16(16) ; .

11.Xiaomei Hu(#); Yingchun Chen(*); Hongxia Gao(#);Determinants of inappropriate admission of elderly people in county level hospitals: a cross-sectional study in rural China；BMJ Open, 2019.2.19, 9(4).

12.Shi-han Lei(#); Ying-chun Chen(*); Yan Zhang; Determinants of inappropriate admissions of children to county hospitals: a cross sectional study from rural China；BMC Health Services Research, 2019.2.1, 19(126).

13.Dai Su(#); Yingchun Chen(*); Hongxia Gao; Does County-Level Medical Centre Policy Influence the Health Outcomes of Patients with Trauma Transported by the Emergency Medical Service System? An Integrated Emergency Model in Rural China；International Journal of Environment Research Public Health, 2019.1.6, 16(133) ;.

14.Dai Su(#); Ying-chun Chen(*); Hong-xia Gao; Effect of integrated urban and rural residents medical insurance on the utilisation of medical services by residents in China: a propensity score matching with difference-in-differences regression approach; BMJ open, 2019.1.2, 9(2) ; .

15.Li haomiao (#); Yingchun Chen(*); Hongxia Gao; Changes in inpatients' distribution and benefits under institution level–based quota payment for specific diseases in rural China: An interrupted time‐series analysis; International Journal of Health Planning and Management, 2018.9.26, 2018: 1~11 ;.