Table 3.

Hazard Ratios for the effect of school attendance and school dropout on incident HIV and HSV-2 infection among young women aged 13–23, enrolled in HPTN 068 from 2011–2015.

	Unweighted				Weighted^a^,b
	No. of events	Person-months of follow-up	HR	95% CI	No. of events	Person-months of follow-up	HR	95% CI
HIV

Total	107	164156			107	148917
Low school attendance (<80%)	19	10930	2.82	1.70, 4.66	16	7164	2.97	1.62, 5.45
High school attendance (≥80%)	88	153226	1	1	91	141753	1	1

Yes Dropout	16	7604	3.24	1.87, 5.63	16	6167	3.25	1.67, 6.32
No Dropout	91	156349	1	1	95	142373	1	1

HSV-2

Total	208	154698			229	140491
Low school attendance (<80%)	34	9329	3.08	2.16, 4.40	30	7589	2.47	1.46, 4.17
High school attendance (≥80%)	174	145369	1	1	199	132902	1	1

Yes Dropout	183	6308	3.22	2.15, 4.83	23	5333	2.70	1.59, 4.59
No Dropout	25	148228	1	1	194	135140	1	1

Abbreviations: CI, robust confidence intervals; HR, hazard ratio.

Weighted models conditioned on the following covariates: HIV: Age, intervention arm, HSV-2 status, parental involvement, partner age, previous attendance, visit, pregnancy, SES. HSV-2: Age, intervention arm, HIV status, parental involvement, partner age, pregnancy, visit, SES.