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Effect of breastfeeding on probability of lactational amenorrhoea
| Breastfeeding category | No. of Estimates | Ref. no | Probability of lactational amenorrhoea RR (95% CI) | p-value (test of heterogeneity) |
|---|---|---|---|---|
| Exclusive or Predominant BF vs. No BF | 03 | (176,180,185) | 1.23 (1.07–1.41) | 0.34 |
| Exclusive or Predominant BF vs. Partial BF | 05 | (174,178,179,182,184) | 1.21 (1.01–1.25) | 0.08 |
| Any BF (exclusive or predominant or partial BF) vs. No BF | 04 | (181,185,186,190) | 1.14 (0.92–1.40) | 0.01 |
