| Mean change in infant weight (g) | |||
|---|---|---|---|
| Study | Visit interval (postpartum) | COC | POP |
| WHO 1984 | Mean + standard error (SE) | Mean + SE | |
| WHO 1984 | 6 to 9 weeks | 561.9 + 24.4 | 623.5 + 23.5 |
| WHO 1984 | 9 to 12 weeks | 523.0 + 24.3 | 531.9 + 23.2 |
| WHO 1984 | 20 to 24 weeks | 354.6 + 19.9 | 395.7 + 19.8 |
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