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Comparison 1 LNG‐IUS (30 μg) versus nonhormonal IUD (Nova T), Outcome 2 Mean days of breastfeeding (over 12 months).
| Mean days of breastfeeding (over 12 months) | |||
|---|---|---|---|
| Study | LNG‐IUS (mean + SD) | Nova T (mean + SD) | Reported P |
| Heikkilä 1982 | 197 + 141 | 208 + 104 | not significant (NS) |
