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| Methods | Non‐comparative prospective trial | |
| Participants | 485 lower‐income, educated Filipino women with extensive experience of breastfeeding. Age 26.6, parity 3.2 | |
| Interventions | LAM education | |
| Outcomes | CPR 0.97 (1030.5 WMAC). 1/3 experienced menses before day 180. CPR all breastfeeding amenorrheic women 0.88 (1141.6 WMAC) | |
| Notes | Selection bias | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | D ‐ Not used |
