Table 2

Health data collected from the national sources

National sources	Major items
National Cancer Registry	Cancer code (ICD-10), site, stage, diagnosis method and date of diagnosis
National Vital Statistics Registry	Date of death and cause of death
National Health Insurance Sharing Service	Eligibility database (14 variables): date of birth, type of eligibility, gender, income level, disability and so on
	Medical treatment database (56 variables): records of inpatient and outpatient usage (length of stay, treatment costs, services received and so on), diagnosis (ICD-10 codes), prescription and so on
	Health examination database (41 variables): health behaviours from questionnaire, general health examination data including cancer screening and laboratory test items (eg, blood cell counts, cholesterol levels, triglyceride concentration, fasting blood sugar, liver enzyme tests (aspartate aminotransferase/serum glutamic oxaloacetic transaminase, alanine aminotransferase/serum glutamic-pyruvic transaminase, gamma-glutamyltransferase), serum creatinine, urinary protein and estimated glomerular filtration rate) and so on.