Table 3.

Major variables in the national health insurance service-senior (NHIS-Senior) cohort

Domain	Health problems	Variables	Year
			‘02	‘03	‘04	‘05	‘06	‘07	‘08	‘09	‘10	‘11	‘12	‘13	‘14	‘15
National health screenings and healthcare utilisation	Hypertension	Systolic blood pressure	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		Diastolic blood pressure	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Diabetes mellitus	Fasting blood glucose	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Dyslipidaemia	Total cholesterol	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		Triglyceride								√	√	√	√	√	√	√
		HDL cholesterol								√	√	√	√	√	√	√
		LDL cholesterol								√	√	√	√	√	√	√
	Anaemia	Haemoglobin	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Kidney/urinary disease	Urine glucose	√	√	√	√	√	√	√						√	√
		Urine blood	√	√	√	√	√	√	√						√	√
		Urine pH	√	√	√	√	√	√	√						√	√
		Urine protein	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Chronic kidney disease	Creatinine								√	√	√	√	√	√	√
	Liver disease	AST (SGOT)	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		ALT (SGPT)	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		γ-GTP	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Frailty/motility	Neurological examination of lower legs for subjects at age 40 or 66						√	√	√	√	√	√	√	√	√
	Osteoporosis	Bone density for subjects at age 40 or 66						√	√	√	√	√	√	√	√	√
	Periodontal diseases	Dental examination	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Cognitive impairment, depression	Mental health screening						√	√	√	√	√	√	√	√	√
National health screenings and healthcare utilisation	Common and uncommon diseases	Disease diagnosis per ICD-10 codes; operation and procedure history, medication history (generic name code, dose, duration of prescription and material codes)	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	All cause- and cause- specific deaths	Vital statistics including dates and causes of deaths	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Cigarette smoking	Cigarette smoking status	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		Daily smoking dose	√	√	√	√	√	√						√	√	√
		Past daily smoking dose							√	√	√	√	√	√	√	√
		Current daily smoking dose							√	√	√	√	√	√	√	√
		Smoking duration	√	√	√	√	√	√						√	√	√
		Smoking duration (ex-smoker)							√	√	√	√	√	√	√	√
		Smoking duration (current smoker)							√	√	√	√	√	√	√	√
	Alcohol	Drinking frequency	√	√	√	√	√	√						√	√	√
		Days of drinking per week							√	√	√	√	√	√	√	√
		Amount of drinking per count	√	√	√	√	√	√						√	√	√
		Amount of drinking per day							√	√	√	√	√	√	√	√
	Obesity	Body mass index	√	√	√	√	√	√	√	√	√	√	√	√	√	√
		Waist circumference						√	√	√	√	√	√	√	√	√
	Physical activity	Days of activity per week	√	√	√	√	√	√						√	√	√
		Days of vigorous activity per week							√	√	√	√	√	√	√	√
		Days of moderate activity per week							√	√	√	√	√	√	√	√
		Days of mild activity per week							√	√	√	√	√	√	√	√
.	Dental caries, etc	Dental examination	√	√	√	√	√	√	√	√	√	√	√	√	√	√
Past medical history and family history	Past medical history	Hypertension, diabetes mellitus, dyslipidaemia, pulmonary tuberculosis, stroke, ischaemic heart disease, etc.	√	√	√	√	√	√	√	√	√	√	√	√	√	√
	Family history	Hypertension, diabetes mellitus, stroke, ischaemic heart disease, etc.	√	√	√	√	√	√	√	√	√	√	√	√	√	√
Healthcare utilisation		Date of visit, types of medical institutions (clinics/hospitals/tertiary hospitals/public health centres), types of visit (inpatient/outpatient/emergency/intensive care), length of stay, medical cost (insurer/patient)	√	√	√	√	√	√	√	√	√	√	√	√	√	√
Healthcare provider		Location, type of hospitals, number of beds, medical equipment, human resources, specialities of physicians	√	√	√	√	√	√	√	√	√	√	√	√	√	√
Socio-economical and demographical factors		Age, sex, age, residential area, insurance type (the employee insured, the self-employed insured, dependents, medical aid), monthly insurance contributions (a proxy for income), types and grades of disabilities	√	√	√	√	√	√	√	√	√	√	√	√	√	√
Long-term care insurance		Application information (medical history, family history, socio-economical status), need assessment records (activities of daily living score, cognitive function, nursing care needs, rehabilitation needs), service grade level, types of LTCI benefits (home care service, institutional care benefits, care allowance for special cases)							√	√	√	√	√	√	√	√

ALT, alanine aminotransferase; AST, aspartate aminotransferase; HDL, high-density lipoprotein; ICD-10, International Classification of Disease, Tenth Division; LDL, low-density lipoprotein; LTCI, long-term care insurance; SGOT, serum glutamic-oxaloacetic transaminases; SGPT, serum glutamic-pyruvic transaminases; γ-GTP, gamma-glutamyl transpeptidase.