Box plot of pre- and posttest measures of ideal age at first childbirth by treatment group.
ARF
ARF
Within each box, horizontal black lines denote median values. Boxes extend from the 25The mean expected probability of having a child by age 30 was 47.8 percent at pretest (median = 50; interquartile range, 25 to 70; range, 0 to 100). The age-related fertility information significantly increased participants’ expected probability of having a child by age 30. At posttest, the expected probability was significantly higher in the ARF group than in the control group, with an adjusted difference of 5.28 percentage points (P = 0.003) (The mean Ideal number of children was 1.9 at pretest (median = 2; interquartile range, 2 to 2; range, 0 to 5). Neither the age-related fertility information nor the fertility policy information had a statistically significant impact on the ideal number of children (