| Intervention group (n = 91) | Control group (n = 91) | pa |
---|---|---|---|
The time when formula milk is first served, (h*), median (IQR) | 4 (2, 6) | 2 (1, 4) |  < 0.001 |
Amount of formula milk given before discharge (ml*), median (IQR) | 70 (45, 127.5) | 90 (65, 150) |  < 0.001 |
Number of breastfeeding within 24 h after birth, n (%) | 7 (6, 8) | 5 (4, 6) |  < 0.001 |
Feeding pattern before discharge, n (%) |  |  |  < 0.001 |
 Exclusive breastfeeding | 67 (73.6) | 40 (44.0) |  |
 Mixed feeding | 24 (26.4) | 47 (51.6) |  |
 Artificial feeding | 0 | 4 (4.4) |  |
BSES-SF before discharge*, mean ± SD | 55.78 ± 8.96 | 46.74 ± 10.08 |  < 0.001 |