Table 1.

Socio-demographic characteristics of study participants

	Rural (n = 706)		Urban (n = 1425)		Total (n = 2131)
Variable	42.4	(s.d. 11.7)	39.9	(s.d. 11.7)	40.8	(s.d. 11.8)
Mean age (s.d.) (years)	n	%	n	%	n	%
Sex
Male	258	36.5	571	40.1	829	38.9
Female	448	63.4	854	59.9	1303	61.1
Monthly income (US$)
<25	211	30.1	206	14.7	417	19.8
25–50	89	12.7	144	10.2	233	11.1
51–250	194	27.7	357	25.5	551	26.2
251–500	177	25.2	544	38.8	721	34.5
>500	29	4.1	148	10.5	177	8.4
Education
No formal schooling	559	85.3	715	56.9	1274	66.6
Less than primary school	67	10.2	332	26.4	399	20.8
Primary school	19	2.9	173	13.7	192	10.5
Secondary school	5	0.7	25	1.9	30	1.5
University	5	0.7	11	0.8	16	0.8