Fig 1.
Schematic of the April 2003 Child Support Grant age eligibility expansion, shifting the maximum age of a grant-eligible child from seven to nine.
CSG = Child Support Grant. Group 1 = 7 and 8 year olds in the year prior to the April 2003 age expansion who recently lost age-eligibility for the Child Support Grant. Group 2 = 7 and 8 year olds in the year after the April 2003 age expansion who maintain their age-eligibility under the new rule. We compared second pregnancy rates among women with first children in Group 1 to women with first children in Group 2.
Fig 2.
Flowchart of cohort construction of 4,845 women in Agincourt, South Africa, 1998–2008.
CSG = Child Support Grant. LTFU = loss to follow-up.
Table 1.
Distribution of covariates at time of first pregnancy, by CSG receipt status, in a cohort of 4845 women in Agincourt, South Africa, 1998–2008.
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.
Fig 3.
Weighted1 extended Kaplan Meier-type cumulative incidence curves for time to second pregnancy among 4,845 women in Agincourt, South Africa, 1998–2008, by exposure to Child Support Grant (CSG).
(a) Absolute difference in median time to second pregnancy between CSG recipients and non-recipients: 30 months (95% CI: 12, 42 months). (b) Absolute difference in time to second pregnancy at 25th percentile between CSG recipients and non-recipients: 8 months (95% CI: 2, 14 months). 1Weighted using stabilized inverse probability of treatment weights to control 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)
Table 3.
Second pregnancy rates among those with first children age 7–8 in April 2002-March 2003, compared to April 2003-March 2004, across two demographic surveillance sites in rural South Africa.