Table 4.

Crossover audio computer-assisted self-interviewing versus computer-assisted personal interviewing comparison study: sex behavior outcomes by randomized group for China, India and Peru.

	China			India			Peru
Questiona	Yes ACASI No CAPIb	Yes CAPI No ACASIc	Same on both	Yes ACASI No CAPI	Yes CAPI No ACASI	Same on both	Yes ACASI No CAPI	Yes CAPI No ACASI	Same on both
Ever had sex?
ACASI first	3 (3%)	19 (19%)	78 (78%)**	1 (3%)	1 (3%)	27 (93%)	1 (3%)	1 (3%)	29 (94%)
CAPI first	2 (2%)	23 (23%)	73 (74%)	0	5 (15%)	29 (85%)	3 (8%)	0	35 (92%)
Question	Higher on ACASI	Higher on CAPI	Same on both	Higher on ACASI	Higher on CAPI	Same on both	Higher on ACASI	Higher on CAPI	Same on both
No. of partners in past year
ACASI first	10 (10%)	20 (20%)	68 (69%)**	5 (19%)	3 (11%)	19 (70%)	6 (21%)	2 (7%)	21 (72%)*
CAPI first	5 (5%)	22 (22%)	71 (72%)	0	8 (26%)	23 (74%)	5 (13%)	0	33 (87%)
No. of partners in past 3 months
ACASI first	2 (2%)	18 (18%)	79 (80%)**	0	1 (4%)	24 (96%)	5 (17%)	7 (24%)	17 (59%)
CAPI first	5 (5%)	23 (23%)	70 (71%)	4 (13%)	6 (19%)	21 (68%)	7 (19%)	1 (3%)	29 (78%)
No. of unprotected acts in past 3 months
ACASI first	16 (18%)	31 (35%)	42 (47%)**	7 (33%)	2 (10%)	12 (57%)	8 (28%)	2 (7%)	19 (66%)
CAPI first	15 (16%)	27 (29%)	51 (55%)	5 (20%)	6 (24%)	14 (56%)	6 (18%)	4 (12%)	23 (70%)

^aIndividuals lacking a response to the same question on one or both interviews could not be included in the counts for that question. Therefore, the total number of participants in each group does not always add up to the number randomized.

^bResponse was ‘yes’ on the audio computer-assisted self-interviewing (ACASI) and ‘no’ on the computer-assisted personal interviewing (CAPI).

^cResponse was ‘yes’ on the CAPI and ‘no’ on the ACASI.

^*P ≤ 0.05 for a difference between ACASI and CAPI responses by the Wilcoxon rank sum test.

^**P ≤ 0.01 for a difference between ACASI and CAPI responses by Prescott’s test (Ever had sex) or the Wilcoxon rank sum test.