Table 2. Association between age at first sex (AFS) and time from sexual debut to marriage with subsequent number of partners reported in last 12 months.

Population and outcome	Predictor variable	Unadjusted estimates	Estimates adjusted for age last birthday, marital status and other predictor
		Proportionate effect on OR of 1 year increase in predictor (95% CI)	Proportionate effect on OR of 1 year increase in predictor (95% CI)
Men reporting ⩾3 partners
N = 8631	AFS	0.93 (0.91 to 0.95)	0.95 (0.92 to 0.97)
N = 8408	TSSSA	1.04 (1.02 to 1.05)	1.03 (1.01 to 1.05)
Women reporting ⩾2 partners
N = 11106	AFS	0.90 (0.86 to 0.93)	0.93 (0.89 to 0.96)
N = 10754	TSSSA	1.10 (1.08 to 1.12)	1.07 (1.04 to 1.09)

AFS, age at first sex; CI, confidence interval; OR, odds ratio; TSSSA, time spent single and sexually active.