Table 1.

Characteristics of the subjects (n = 9391).

Variables	Categories	Frequency (n)	Percentage (%)
Sex	Man	3772	40.2
	Woman	5619	59.8
Age (years)	65–74	5697	60.7
	75–84	3132	33.4
	≥85	562	6.0
Family	Alone	3031	32.3
	Spouse	4693	50.0
	Others	1667	17.8