| Male sex, n (%) |
9 (69.2) |
8 (61.5) |
0.680 |
| Gestational age (weeks), median [range] |
31.0 [24–33] |
31.0 [24–34] |
0.429 |
| <32 weeks of gestation age, n (%) |
9 (69.2) |
8 (61.5) |
|
| Birth weight (g), median [range] |
1,544 [650–1,772] |
1,470 [847–1,998] |
0.798 |
| <1,500 g of birth weight, n (%) |
6 (46.2) |
7 (53.8) |
|
| Caesarean section, n (%) |
11 (84.6) |
11 (84.6) |
1.000 |
| Own mother’s milk only, n (%) |
2 (15.4) |
3 (23.1) |
0.618 |
| Cow milk-based formula only, n (%) |
0 (0.0) |
2 (15.4) |
0.086 |
| Mixed (formula and any breast milk), n (%) |
11 (84.6) |
8 (61.5) |
0.179 |
| Antibiotic use, n (%) |
3 (23.1) |
3 (23.1) |
1.000 |
