Received: 10 September 2022
Accepted: 2 March 2023
First Online: 11 March 2023
: All methods were carried out in accordance with relevant guidelines and regulations. Official approval was obtained from the NHIA for the use of the enrolment data for this evaluation study. We removed personal identifiers such as name, telephone number, and residential address from the data prior to analysis to ensure anonymity of the NHIS members whose data were used for the study.
: Not applicable.
: The authors are all employees of the National Health Insurance Authority, however, their affiliation did not in anyway, influence findings of this study.