Table 3.
Comparisons of complications between pregnant women with high and non-high white blood cell count
| Variable | Non-high n = 15,244 |
High n = 986 |
OR [95% confidence interval] | P value |
|---|---|---|---|---|
| Age (years), mean (SD)† | 30.2 (4.44) | 29.3 (4.29) | \ | < 0.001*** |
| Placental abruption, n (%) | 68 (0.45%) | 4 (0.41%) | 0.94 [0.28;2.29] | 1.000 |
| Placenta previa, n (%) | 149 (0.98%) | 20 (2.03%) | 2.11 [1.28;3.30] | 0.003** |
| Placental adhesion, n (%) | 441 (2.89%) | 38 (3.85%) | 1.35 [0.95;1.87] | 0.103 |
| Premature rupture of membranes, n (%) | 2766 (18.1%) | 201 (20.4%) | 1.16 [0.98;1.35] | 0.085 |
| Oligohydramnios, n (%) | 440 (2.89%) | 41 (4.16%) | 1.46 [1.04;2.01] | 0.029* |
| Polyhydramnios, n (%) | 122 (0.80%) | 9 (0.91%) | 1.16 [0.54;2.16] | 0.842 |
| Gestational hypertension, n (%) | 239 (1.57%) | 21 (2.13%) | 1.38 [0.85;2.11] | 0.218 |
| Preeclampsia or eclampsia, n (%) | 240 (1.57%) | 23 (2.33%) | 1.50 [0.95;2.27] | 0.090 |
| Gestational diabetes, n (%) | 2993 (19.6%) | 189 (19.2%) | 0.97 [0.82;1.14] | 0.752 |
| Intrahepatic cholestasis of pregnancy, n (%) | 419 (2.75%) | 23 (2.33%) | 0.85 [0.54;1.27] | 0.499 |
| Secondary uterine inertia, n (%) | 931 (6.11%) | 78 (7.91%) | 1.32 [1.03;1.67] | 0.027* |
| Postpartum hemorrhage, n (%) | 262 (1.72%) | 18 (1.83%) | 1.07 [0.64;1.69] | 0.902 |
| Hypothyroidism in pregnancy, n (%) | 485 (3.18%) | 36 (3.65%) | 1.16 [0.81;1.61] | 0.473 |
| Hyperthyroidism in pregnancy, n (%) | 78 (0.51%) | 5 (0.51%) | 1.02 [0.35;2.29] | 1.000 |
| Premature birth, n (%) | 513 (3.37%) | 42 (4.26%) | 1.28 [0.92;1.75] | 0.159 |
| Low birth weight, n (%) | 389 (2.55%) | 35 (3.55%) | 1.41 [0.98;1.98] | 0.072 |
| Macrosomia, n (%) | 503 (3.30%) | 25 (2.54%) | 0.77 [0.50;1.13] | 0.223 |
| Intrauterine growth restriction, n (%) | 182 (1.19%) | 20 (2.03%) | 1.73 [1.05;2.68] | 0.032* |
| Fetal distress, n (%) | 343 (2.25%) | 29 (2.94%) | 1.32 [0.88;1.91] | 0.195 |
| Fetal malformation, n (%) | 42 (0.28%) | 1 (0.10%) | 0.42 [0.02;1.90] | 0.519 |
| Complications, n (%)‡ | 9538 (62.6%) | 646 (65.5%) | 1.14 [0.99;1.30] | 0.068 |
†SD: standard deviation
‡Complications were women with one or more pregnancy-related complications
*P < 0.05
**P < 0.01
***P < 0.001