Table 1.
Characteristics of the study population. Data are presented as mean (SD) or n (%)
| Characteristics | Both sexes (n = 60) | Boys (n = 30) | Girls (n = 30) | P-value† |
|---|---|---|---|---|
| Maternal age, years | 30.2 (4.4) | 29.7 (3.1) | 30.3 (4.9) | 0.8 |
| Paternal age, years | 32.1 (4.5) | 31.1 (3.3) | 33.0 (5.3) | 0.09 |
| Newborns | ||||
| Gestational age, weeks | 39.3 (1.3) | 39.3 (1.2) | 39.3 (1.5) | 0.9 |
| Season of delivery | ||||
| Winter | 24 (40%) | 10 (33%) | 14 (46%) | 0.57 |
| Spring | 11 (18%) | 5 (17%) | 6 (20%) | |
| Summer | 11 (18%) | 6 (20%) | 5 (17%) | |
| Fall | 14 (24%) | 9 (30%) | 5 (17%) |
†P-values are determined by either two samples t-test (continuous data) or chi-square test (categorical data), between girls and boys.