Table 2.
Comparison of related characteristics of maternal BMI groups.
| Variables | Total | Groups | Statistics | P | |||
|---|---|---|---|---|---|---|---|
| Underweight (n = 120) | Normal weight (n = 209) | Overweight (n = 164) | Obesity (n = 59) | ||||
| Age (year), mean ± SD | 29.70 ± 4.42 | 28.03 ± 3.88 | 29.18 ± 4.13 | 31.01 ± 4.72 | 31.36 ± 4.08 | F = 15.377 | <0.001 |
| Educational level, n (%) | χ 2 = 9.009 | 0.173 | |||||
| Junior high school and below | 120 (21.74) | 18 (15.00) | 41 (19.62) | 47 (28.66) | 14 (23.73) | ||
| High school or vocational high school | 155 (28.08) | 37 (30.83) | 57 (27.27) | 44 (26.83) | 17 (28.81) | ||
| Graduate degree and above | 277 (50.18) | 65 (54.17) | 111 (53.11) | 73 (44.51) | 28 (47.46) | ||
| Number of pregnancies, M (Q1, Q3) | 2 (1, 3) | 1 (1, 2) | 2 (1, 3) | 2 (1, 3) | 2 (2, 3) | χ 2 = 20.350 | <0.001 |
| History of premature birth, n (%) | 14 (2.54) | 3 (2.50) | 5 (2.39) | 4 (2.44) | 2 (3.39) | χ 2 = 0.198 | 0.978 |
| History of miscarriage, n (%) | 205 (37.14) | 27 (22.50) | 76 (36.36) | 72 (43.90) | 30 (50.85) | χ 2 = 19.032 | <0.001 |
| History of medication, n (%) | 27 (4.89) | 3 (2.50) | 9 (4.31) | 7 (4.27) | 8 (13.56) | χ 2 = 11.295 | 0.010 |
| Adverse maternal and neonatal outcomes | |||||||
| Maternal complication, n (%) | 147 (26.63) | 27 (22.50) | 39 (18.66) | 54 (32.93) | 27 (45.76) | χ 2 = 22.224 | <0.001 |
| Parturition outcome (cesarean delivery), n (%) | 277 (50.18) | 39 (32.50) | 100 (47.85) | 98 (59.76) | 40 (67.80) | χ 2 = 28.799 | <0.001 |
| Adverse neonatal outcome, n (%) | 358 (64.86) | 58 (48.33) | 128 (61.24) | 122 (74.39) | 50 (84.75) | χ 2 = 32.349 | <0.001 |
| Adverse maternal and neonatal outcomes, n (%) | 390 (70.65) | 66 (55.00) | 139 (66.51) | 130 (79.27) | 55 (93.22) | χ 2 = 36.274 | <0.001 |