Table 1

Responses to the part I questions (background characteristics)

	Male			Female
	TIM (n=290) %	TICQM (n=290) %	Total (n=580) %	TIM (n=291) %	TICQM (n=291) %	Total (n=582) %	Total (n=1162) %
TIM = telephone interviewer method; TICQM = telephone interviewer and computerised questionnaire method.
*χ² test; unknown data were excluded before performing statistical tests.
†In an open ended question, respondents were asked to name three routes of HIV transmission. Correct answers included “sexual intercourse,” “vertical transmission,” “sharing needles,” and “contaminated blood product.”
Age group
18–30	35.5	42.1	38.8	36.1	34.4	35.2	37.0
31–40	28.3	28.3	28.3	40.2	38.8	39.5	33.9
41–60	35.2	29.7	32.4	23.0	26.8	24.9	28.7
Unknown	1.0	0.0 (p=0.113)*	0.5	0.7	0.0 (p=0.388)*	0.3	0.4
Education level
Primary school or below	12.4	7.6	10.0	12.7	12.4	12.5	11.3
Secondary school	54.5	51.0	52.8	62.5	58.8	60.7	56.7
Post-secondary to college/university	26.9	35.5	31.2	20.6	24.7	22.7	26.9
Graduate school	5.2	5.2	5.2	3.8	4.1	4.0	4.6
Unknown	1.0	0.7 (p=0.118)*	0.9	0.3	0.0 (p=0.646)*	0.2	0.5
Knowledge about HIV transmission routes†
Mentioned sexual intercourse	87.6	90.7 (p=0.230)	89.1	88.3	89.7 (p=0.596)	89.0	89.1
Mentioned mother-infant transmission	4.5	7.2 (p=0.157)	5.9	7.9	5.8 (p=0.326)	6.9	6.4
Mentioned sharing needle	41.4	44.5 (p=0.450)	42.9	30.6	28.5 (p=0.586)	29.6	36.2
Mentioned contaminated blood products	50.0	53.8 (p=0.361)	51.9	63.6	62.2 (p=0.731)	62.9	57.4
Perceived efficacy of condom use for HIV prevention
Very high	7.9	7.9	7.9	7.2	4.8	6.0	7.0
High	50.0	52.4	51.2	48.1	45.7	46.9	49.1
Moderate	34.1	33.1	33.6	34.4	38.1	36.3	34.9
Low	6.6	6.2	6.4	9.3	9.3	9.3	7.8
Very low	0.7	0.0	0.3	0.7	0.7	0.7	0.5
Unknown	0.7	0.3 (p=0.766)*	0.5	0.3	1.4 (p=0.556)*	0.9	0.7