Lactation outcomes by time to first expression
| First expression attempt ≤6 hours after birth | First expression attempt >6 hours after birth | |
| Day 4 (N) | 52 | 47 |
| MOM quantity (g) | ||
| Mean (SD) | 261.5 (235.6) | 173.2 (159.8) |
| Median (IQR) | 225 (67.9–362.7) | 128.7 (66.2–238.5) |
| Expressing frequency | ||
| Mean (SD) | 4.9 (2.4) | 5.1 (2.0) |
| Median (IQR) | 5 (4–7) | 5 (4–7) |
| Day 14 (N) | 46 | 43 |
| MOM quantity (g) | ||
| Mean (SD) | 566.4 (369.6) | 410.7 (306.3) |
| Median (IQR) | 543.3 (308.1–731.1) | 321.7 (201.3–624.8) |
| Expressing frequency | ||
| Mean (SD) | 6.1 (1.8) | 5.9 (2.1) |
| Median (IQR) | 6 (5–7) | 6 (5–7) |
| Day 21 (N) | 50 | 39 |
| MOM quantity (g) | ||
| Mean (SD) | 594.5 (412.1) | 520.8 (356.3) |
| Median (IQR) | 525.3 (287.1–860) | 473.8 (231.6–777.7) |
| Expressing frequency | ||
| Mean (SD) | 6.0 (2.2) | 5.5 (2.1) |
| Median (IQR) | 6.5 (5–7) | 6 (4.5–7) |
| 36 weeks’ PMA (N) | 57 | 50 |
| Exclusive MOM (n, %) | 39 (68.4) | 31 (62.0) |
| Any MOM (n, %) | 50 (87.7) | 42 (84.0) |
MOM, mother’s own milk; PMA, postmenstrual age.