Revealing a safer sex option to reduce HIV risk: a cluster-randomized trial in Botswana

BMC Public Health

Table 3 Effect on Pregnancy by Baseline Belief - Comparing Intervention versus Control

		% of students that think a given age group is high or low risk at baseline
		10-19 year olds		20-29 year olds
	All	Low Risk	High Risk	Low Risk	High Risk
Pregnancy
aRRR (95% CI)	0.657 (0.433 - 0.997)	0.972 (0.707 - 1.336)	0.375 (0.210 - 0.669)	0.429 (0.194 - 0.951)	0.887 (0.568 - 1.384)
p-value	0.049	0.860	0.001	0.037	0.597
n	15,335	7118	8217	6880	6758

^aAdjusted Relative Risk Ratios (aRRR) are calculated clustering standard errors by school and includes region and school level fixed effects to account for stratification. Adjustments were generated using a vector of school-level baseline control variables to enhance statistical precision. This vector includes: enrollment, dropout, class-reported meaures of pregnancy and class-reported rates of girls dating older partners

ISSN: 1471-2458