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Table 2 Fetal outcome of second twin according to mode of delivery

From: Delivery of the second twin: influence of presentation on neonatal outcome, a case controlled study

   Elective C-Section (ESC) n = 277 Unplanned C-Section (UPC) n = 233 Vaginal delivery (VD) n = 207 P-value Anova
Gestational week 32–35 93 (33.6%) 140 (60.1%) 65 (31.4%) < 0.001
36–39 184 (66.4%) 93 (39.9%) 142 (68.6%)
Fetal weight [g] 2351 ± 450 2207 ± 414 2518 ± 400 < 0.001
Head circumference [cm] 32.6 ± 1.6 32.2 ± 1.6 33.0 ± 1.3 < 0.001
Apgar 5′ mean 9.47 ± 0.8 9.22 ± 1.0 9.44 ± 0.9 0.005
Apgar 5′ (n) < 6 1 0 2 0.003
6–8 26 48 28  
UA pH mean 7.31 ± 0.05 7.29 ± 0.08 7.26 ± 0.08 < 0.001
UA pH < 7.10 0 6 7 < 0.001
< 7.20 4 16 30  
Transfer to NICU n = 219 all 72 (26.0%) 109 (46.8%) 38 (18.4%) < 0.001
due to fetal distress 11 (4.0%) 17 (7.3%) 6 (2.9%) Anova p = 0.07 0.04 UPC vs. VD
  1. Continuous data are given by mean and+/− standard deviation