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Table 1 Maternal demographic and baseline clinical characteristics

From: Maternal bleeding complications following early versus delayed umbilical cord clamping in multiple pregnancies

  ECC (N = 295) DCC (N = 154) p-values
Maternal age (years) 32.2 ± 5.9 31.1 ± 6.1 0.05
Gestational age (weeks) 35.2 ± 2.9 34.5 ± 3.0 0.02
Race/Ethnicity
 White, non-Hispanic 114 (38.6) 74 (48.1)  
 White, Hispanic 111 (37.6) 54 (35.1)  
 Others (Black, Asian, or other race) 70 (23.7) 26 (16.8) 0.10
Multigravida 228 (77.3) 106 (68.8) 0.05
Multiparous 193 (65.4) 87 (56.5) 0.06
Monochorionic twins 58 (19.7) 32 (20.8) 0.78
3 or more multiples 9 (3.0) 2 (1.3) 0.25
Antenatal complications
 PIH 49 (16.6) 24 (15.6) 0.78
 GDM 44 (14.9) 28 (18.8) 0.37
Initial hemoglobin (g/dL) 11.9 ± 1.4 11.9 ± 1.3 0.58
Initial hematocrit (%) 35.7 ± 3.8 35.7 ± 3.5 0.98
BMI (kg/m2) 32.3 ± 5.6 32.0 ± 6.4 0.64
Anesthesia method
 Local 4 (1.4) 3 (1.9)  
 Epidural/Spinal 288 (97.6) 150 (97.4)  
 General 3 (1.0) 1 (0.6) 0.38
In labor at the time of delivery 164 (55.6) 113 (73.4) <  0.01
Operative delivery 253 (85.8) 99 (64.3) <  0.01
Total fetal weight (g) 4813.3 ± 1129.7 4490.8 ± 1057.2 <  0.01
  1. BMI body mass index, GDM Gestational diabetes mellitus, PIH pregnancy-induced hypertension
  2. The results are reported as the mean ± standard deviation (SD) and frequency (percentage), and p < 0.05 is statistically significant