Table 1.

Demographic characteristics.

Variables		Number	Percentage (%)
Total		994	100
Gender
	Male	144	14.5
	Female	850	85.5
Age
	18–25	214	21.5
	~30	339	34.1
	~40	291	29.3
	~50	114	11.5
	>50	36	3.6
Marriage
	Unmarried or divorce	428	43.1
	Married	566	56.9
Education level
	Undergraduate or less	845	85.0
	Postgraduate or more	149	15.0
Technical title
	Junior	659	66.3
	Intermediate	278	28.0
	Senior	57	5.7
Occupation
	Doctor	183	18.4
	Nurse	811	81.6
Department
	High risk	309	31.1
	Ordinary	685	68.9