Working retirees in Taiwan: examining determinants of different working status after retirement.

"Declarations Ethics approval and consent to participateThis study was reviewed and approved according to the ethical standards of the Institutional Review Board of National Cheng Kung University Hospital (A-ER-102-380). All respondents signed the informed consent and followed the autonomous principle of voluntary participation in this survey. No personal information was disclosed in this study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was funded by the Health Promotion Administration, Ministry of Health and Welfare, Taiwan, grant number [MOHW103-HPA-H-114-115103 and MOHW104-HPA-H-114-125104]."