Table 1.
Summary characteristics of participants
| Characteristics | SGA, n = 315 | AGA, n = 3879 | t/chi-square (P) |
|---|---|---|---|
| Gestational age (weeks, mean (SD)) | 38.69 ± 2.01 | 38.42 ± 1.91 | 0.403 |
| Maternal age, n (%) | |||
| ≤ 24 | 74 (23.5) | 812 (20.9) | 0.598 |
| 25–29 | 104 (33.0) | 1404 (36.2) | |
| 30–34 | 84 (26.7) | 1054 (37.2) | |
| ≥ 35 | 53 (16.8) | 609 (15.7) | |
| Parity, n (%) | |||
| 0 | 158 (50.2) | 1780 (45.9) | 0.144 |
| ≥ 1 | 157 (49.8) | 2099 (54.1) | |
| Gestational hypertension, n (%) | |||
| Yes | 15 (4.8) | 74 (1.9) | 0.001 |
| No | 300 (95.2) | 3805 (98.1) | |
| Gestational diabetes mellitus, n (%) | |||
| Yes | 9 (2.9) | 147 (3.8) | 0.400 |
| No | 306 (97.1) | 3732 (96.2) | |
| Delivery mode, n (%) | |||
| Vaginal | 157 (49.8) | 1874 (48.3) | 0.601 |
| Cesarean | 158 (50.2) | 2005 (51.7) | |
| Infant sex, n (%) | |||
| Male | 114 (36.2) | 2243 (57.8) | < 0.001 |
| Female | 201 (63.8) | 1636 (42.2) | |
Chi-square test for categorical variables and independent sample t test for continuous variables