Research Article
The Effect of Ethnic Variation on the Success of Induced Labour in Nulliparous Women with Postdates Pregnancies
Table 2
Demographics and perinatal characteristics by ethnic categories.
| | | Ethnicity | | | White | Black | Asian | | (%) | (%) | (%) |
| | Mother’s age at delivery (years), mean (SD) | 27.2 (6.3) | 26.4 (5.3) | 28.1 (4.4) | 0.583 | | Gestational age at delivery (days), mean (SD) | 291.9 (2.2) | 291.1 (2.2) | 292.1 (2.7) | 0.183 | | BMI (kg/m2), mean (SD) | 26.7 (5.7) | 26.5 (5.2) | 24.9 (5.1) | 0.187 | | Smoking | | | | | | Nonsmoker (never) | 856 (55.9) | 20 (76.9) | 35 (85.4) | <0.001++ | | Current smoker | 167 (10.9) | 2 (7.7) | 0 (0.0) | | | Previous smoker | 509 (33.2) | 4 (15.4) | 6 (14.6) | | | Presence of meconium | | | | | | No | 1233 (78.9) | 20 (76.9) | 32 (76.2) | 0.886+ | | Yes | 329 (21.1) | 6 (23.1) | 10 (23.8) | | | Use of an epidural | | | | | | No | 1036 (66.1) | 22 (84.6) | 27 (64.3) | 0.134+ | | Yes | 532 (33.9) | 4 (15.4) | 15 (35.7) | | | Route of birth | | | | | | Caesarean section delivery | 375 (23.9) | 12 (46.2) | 12 (28.6) | 0.026+ | | Vaginal route | 1193 (76.1) | 14 (53.8) | 30 (71.4) | | | Fetal gender | | | | | | Female | 752 (48) | 8 (30.8) | 21 (50.0) | 0.210+ | | Male | 816 (52) | 18 (69.2) | 21 (50.0) | | | Birth weight, mean (SD) | 3713.4 (430.1) | 3723.1 (428.1) | 3542.3 (436.4) | 0.039 | | Head circumference at birth (cm), mean (SD) | 35.5 (1.4) | 35.4 (1.2) | 34.9 (1.2) | 0.012 | | Apgar score at 1 minute, mean (SD) | 8.3 (1.6) | 8 (1.5) | 8.3 (1.4) | 0.573 | | Apgar score at 5 minutes, mean (SD) | 9.6 (0.9) | 9.4 (0.8) | 9.5 (0.7) | 0.365 | | Cord gases at delivery, arterial pH, mean (SD) | 7.23 (0.08) | 7.22 (0.09) | 7.21 (0.08) | 0.414 | | Cord gases at delivery, venous pH, mean (SD) | 7.25 (0.07) | 7.25 (0.09) | 7.25 (0.08) | 0.114 | | Admitted to NNU | | | | | | No | 1265 (95.8) | 22 (100.0) | 32 (94.1) | 0.735++ | | Yes | 56 (4.2) | 0 (0.0) | 2 (5.9) | |
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ANOVA; +Pearson’s chi-square test; ++Fisher’s exact test.
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