Figure 1:

Cumulative incidence of rapid repeat pregnancy occurring within 12 months of a prior live birth, among women with (thick dashed line) and without (dotted line) intellectual and developmental disabilities. To avoid misclassification of complications from the index live birth as a rapid repeat pregnancy, rapid repeat pregnancies were counted starting at 3 months after the index live birth. Because of the small number of events among women with intellectual and developmental disabilities, the data for 3 and 4 months are combined, to protect individuals’ privacy.