Characteristics	N	Percentage
Age group (years)
≤ 20	00093	000.4
21-30	01276	005.2
31-40	08250	033.8
41-50	08921	036.5
51-60	04381	017.9
>60	01507	006.2
Total	24428	100.0
Mean age ± SD	43.8 ± 9.2
Sex
Male	08605	034.6
Female	16235	065.4
Total	24840	100.0
Marital status
Single	05340	022.1
Married	13260	054.9
Widowed	03624	015.0
Divorced	01936	008.0
Total	24160	100.0
Highest education
No formal	04125	017.0
Primary	04825	020.0
Secondary	07639	031.6
Tertiary	07575	031.4
Total	24164	100.0