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| Methods | Prospective, non‐comparative study | |
| Participants | 178 women in Nigeria attending infant welfare clinics | |
| Interventions | LAM education and questionnaires completed at 6, 10, and 14 weeks, and 6 months postpartum | |
| Outcomes | There were no pregnancies in any of the women during the study period | |
| Notes | No clear definition of menstruation; no life tables | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | D ‐ Not used |
