Table 2. Results from Cox regression models comparing the hazard of second pregnancy among Child Support Grant recipients relative to non-recipients, in a cohort of 4845 women in Agincourt, South Africa, 1998–2008.

Model	HR	95% CI	p-value
Full cohort (n = 4845)
Unadjusted	0.72	0.65, 0.79	<0.0001
Adjusted 1	0.66	0.58, 0.75	<0.0001
MSM	0.65	0.58, 0.75	<0.0001
Under 21 years 2 (n = 2110)
Unadjusted	0.70	0.60, 0.82	<0.0001
Adjusted 1	0.60	0.50, 0.72	<0.0001
21 years or older 2 (n = 2735)
Unadjusted	0.73	0.64, 0.84	<0.0001
Adjusted 1	0.72	0.61, 0.86	<0.0001

¹Adjusted for age (coded with a restricted cubic spline with five knots), education (coded, in years, with a restricted cubic spline with five knots), former refugee status (coded as a dichotomous variable), household wealth (coded with a restricted cubic spline with five knots), and calendar year of birth of first child (coded with a restricted cubic spline with five knots)

²Age at birth of first child

HR = Hazard Ratio; CI = Confidence Interval; MSM = Marginal Structural Model