Table 2.

Controlled direct effect (CDE) of school attendance on incident HIV and HSV-2 by different levels of the mediators partner number and partner age difference

	HIV			HSV-2
	Risk (%)	RD % (95% CI)	RR (95% CI)	Risk (%)	RD %(95% CI)	RR (95% CI)
Total effect
High attendance	4.7	−1.6 (−2.3, −1.0)	0.74 (0.66,0.83)	6.7	−8.3 (−9.1, −7.5)	0.45 (0.41, 0.49)
Low attendance	6.3	0	1.0	15.1	0	1
CDE No older partners
High attendance	4.6	−1.2 (−1.8, −0.7)	0.79 (0.70, 0.88)	6.3	−6.2 (−7.1, −5.4)	0.51 (0.46, 0.55)
Low attendance	5.8	0	1	12.6	0	1
CDE No sexual partners
High attendance	3.2	−0.4 (−0.9, 0.1)	0.89 (0.77, 1.03)	5.8	−6.9 (−7.8, −6.1)	0.46 (0.41, 0.50)
Low attendance	3.6	0	1	12.8	0	1
CDE One sexual partner
High attendance	7.0	−0.8 (−1.6, −0.1)	0.89 (0.81, 0.98)	8.2	−7.6 (−8.5, −6.7)	0.52 (0.48,0.56)
Low attendance	7.8	0	1	15.8	0	1

^*RD: Risk Difference, RR: Risk Ratio, CI: Confidence Interval