2.1. Data Sources

This study was conducted using the Labor Insurance Database (LID) for the working population and the National Health Insurance (NHI) Research Database (NHIRD) for the general population. Historical records of occurrences of occupational accidents, diseases, and death events in the working population are compiled by the Bureau of Labor Insurance, Ministry of Labor [17]. All work-related information (such as work-related attacks) for all employees in Taiwan is included in the LID. Approximately 99% of people in Taiwan participate in the NHI program. The Longitudinal Health Insurance Database 2005 (LHID2005), a subset of the NHIRD database, was released by the National Health Research Institute from the Ministry of Health and Welfare [18]. The LHID2005 contains claims data of 1,000,000 beneficiaries randomly selected from the Registry of Beneficiaries of the NHIRD in 2005. This database contains registration files and original claims data for reimbursement.