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| Gestational age, weeks | 23 – 27 | 28 – 31 | 32 – 34 | 35 – 36 | |
| N (%) | n (%) | n (%) | n (%) | n (%) | |
| Eligible for inclusion | 2298 (100) | 131 (100) | 398 (100) | 984 (100) | 785 (100) |
| Consented participation | 1747 (76) | 91 (69) | 320 (80) | 789 (80) | 547 (70) |
| Breastfeeding outcomes | 1488 (65) | 60 (46) | 257 (65) | 688 (70) | 483 (62) |
N = total number, n = sub group numbers.
