Hsin-Hua Chen

May 6, 2023 | arthritis-research.biomedcentral.com | Chung-Mao Kao |Yi-Ming Chen |Wen-Nan Huang |Yi-Hsing Chen |Hsin-Hua Chen

Study designThis was a nationwide, population-based, nested case–control study. Source of dataThe claims data on AS study subjects were obtained from the NHIRD from January 1, 2003, to December 31, 2013. An obligatory, single-payer NHI programme covering more than 99% of Taiwan’s population was implemented on March 1, 1995 [9], and has facilitated population-based longitudinal epidemiologic studies.