Table 1. Characteristics of the subjects.
| Variables | Exclusive breast milk (n = 7) |
Exclusive Formula (n = 8) |
Predominance of breast milk (n = 16) |
Predominance of formula (n = 16) |
Mixed (n = 15) |
p-value |
|---|---|---|---|---|---|---|
| Maternal age (years)—mean ± SD | 24.0 ± 9.1 | 26.1 ± 6.4 | 31.6 ± 5.5 | 24.6 ± 7.4 | 28.0 ± 7.5 | 0.052 |
| C-section–n(%) | 7 (100) | 6 (75) | 13 (81.3) | 11 (68.8) | 12 (80) | 0.556 |
| Rupture of membranes (hours)–median (P25-P75) | 0 (0–3) | 0 (0–0.4) | 0.04 (0–37) | 6.1 (0–96.5) | 0 (0–3) | 0.246 |
| Rupture of membranes ≥18 hours–n(%) | 0 (0.0) | 1 (12.5) | 4 (25) | 7 (43.8) | 2 (13.3) | 0.062 |
| Maternal antibiotic–n(%) | 3 (42.9) | 5 (62.5) | 11 (68.8) | 14 (87.5) | 8 (53.3) | 0.188 |
| Preeclampsia–n(%) | 0.119 | |||||
| Yes | 5 (71.4) | 1 (12.5) | 7 (43.8) | 6 (37.5) | 4 (26.7) | |
| No | 2 (28.6) | 6 (75) | 9 (56.3) | 10 (62.5) | 11 (73.0) | |
| Eclampsia | 0 (0.0) | 1 (12.5) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Streptococcus–n(%) | 1 (14.3) | 2 (25) | 4 (25) | 5 (31.3) | 6 (40) | 0.944 |
Statistically significant association by the test of the residuals adjusted to 5% of significance
The mean, the median standard deviation and the interquartile range were used, using Analysis of Variance (ANOVA) in conjunction with the Tukey test was applied. In case of asymmetry, the Kruskall-Wallis test in set with Dunn were used. Categorical variables were described by absolute and relative frequencies. In the comparison of proportions, Pearson's chi-square test was used in conjunction with residue analysis adjusted