7.2. Analysis.
Comparison 7 COC (levonorgestrel 150 μg + EE 30 μg) versus POP (norgestrel 75 μg), Outcome 2 Mean change in infant weight (g).
| 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 |