| Methods |
Design: prospective cohort.
Quality assessment
Control for confounding: C.
Follow‐up: B.
Blinding: A. |
| Participants |
1018 Bangladeshi women with live births. |
| Interventions |
EBF = BF with no other liquids or solids for >= 7 months (n = 647).
MBF = EBF for 4 months with introduction of liquid or solid supplements before 7 months (n = 371). |
| Outcomes |
Duration of lactational amenorrhea. |
| Notes |
1. Over 95% of study women BF > 16 months, so all MBF women assumed to continue BF >= 6 months.
2. Multivariate (Cox) regression controlled for maternal education, parity, religion, and weight, but reference group EBF < 1 month. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Allocation concealment (selection bias) |
Unclear risk |
D ‐ Not used |
