Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Repeat pregnancy (self‐report) by 18 months | 1 | 221 | Odds Ratio (M‐H, Fixed, 95% CI) | 0.35 [0.17, 0.70] |
