Table 3.
Characteristics of infants (n = 116).
| Characteristic | n * | |
|---|---|---|
| Gestational age (weeks) | 114 | 39+4 (38+2, 40+2); 22+6–42+3 |
| Boy | 116 | 55 (47.4%) |
| Birth weight (grams) | 116 | 3195.0 (2795.0, 3472.5); 450.0–4640.0 |
| Birth weight percentile 1 | ||
| ≤25 | 32 (27.6%) | |
| 25–75 | 116 | 73 (62.9%) |
| ≥75 | 11 (9.5%) | |
| Age of infant (months) | 114 | |
| 0–6 | 45 (39.5%) | |
| 6–12 | 43 (37.7%) | |
| 12–50 | 26 (22.8%) | |
| Postmenstrual age of preterm infants (weeks) | 19 | 50.3 (38.6, 78.2) |
| Weight percentile of breastfed child 2 | 113 | |
| ≤15 | 17 (15.0%) | |
| 15–85 | 77 (68.1%) | |
| ≥85 | 19 (16.8%) |
Quantitative variables are expressed as medians (25th and 75th percentiles) because they were distributed non-parametrically. Ranges are shown after the semicolon. Qualitative variables are presented as the absolute and relative frequencies (%). * n = 116 includes a fetal death at 22+6 weeks of gestational age and two pairs of twins; n = 114 is due to the number of gestations; n = 113 excludes the fetal death, a twin baby who died in the first week of life, and one child with missing data. 1 Based on Olsen intrauterine growth curves [46]. 2 Based on the World Health Organization (WHO)’s child growth standards [47].