Table 1. Univariate demographic analysis of FGR group and non-FGR group.
| Indicators | Groups | Z/χ2 | P value | |
|---|---|---|---|---|
| Non-FGR (n=350) | FGR (n=90) | |||
| Maternal age (years) | 29.00 (24.00–34.00) | 28.00 (22.28–34.00) | 1.989 | 0.047** |
| Maternal weight (kg) | 67.00 (53.00–88.00) | 63.00 (49.00–91.73) | 3.464 | 0.001** |
| Body height (cm) | 160.00 (150.68–171.00) | 158.00 (151.00–171.80) | 2.987 | 0.003** |
| BMI (kg/m2) | 25.78 (21.17–32.91) | 24.84 (19.67–33.56) | 2.108 | 0.04** |
| SBP (mmHg) | 118.00 (99.00–139.48) | 118.00 (100.40–160.00) | 1.438 | 0.15 |
| DBP (mmHg) | 72.00 (59.00–94.48) | 75.50 (59.65–113.35) | 2.652 | 0.008** |
| MAP (mmHg) | 87.00 (74.68–108.98) | 90.00 (76.38–127.69) | 2.492 | 0.01** |
| Gestational age (days) | 273.00 (245.00–287.00) | 263.50 (207.03–280.00) | 7.553 | <0.001* |
| Gravidity | 0.459 | 0.50 | ||
| 1 | 204 (58.29) | 56 (62.22) | ||
| ≥2 | 146 (41.71) | 34 (37.78) | ||
| Parity | 4.818 | 0.03** | ||
| 0 | 252 (72.00) | 75 (83.33) | ||
| ≥1 | 98 (28.00) | 15 (16.67) | ||
| Mode of delivery | 33.463 | <0.001* | ||
| Natural childbirth | 249 (71.14) | 35 (38.89) | ||
| Cesarean section | 101 (28.86) | 55 (61.11) | ||
| Advanced maternal age | 1.038 | 0.31 | ||
| No | 346 (98.86) | 90 (100.00) | ||
| Yes | 4 (1.14) | 0 (0) | ||
The quantitative data were expressed by median and percentile [M (P2.5–P97.5)], while qualitative data were expressed by n (%). *, P<0.001; **, P<0.05. FGR, fetal growth restriction; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure [MAP =DBP + (SBP−DBP)/3].