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. Author manuscript; available in PMC: 2024 Mar 27.
Published in final edited form as: Explor Res Hypothesis Med. 2023 Nov 29;9(1):15–24. doi: 10.14218/ERHM.2023.00039

Table 3.

Perinatal outcome of the twins within the two time periods of 14 years

Variable Period (Mean ± SD) t-value p-value
I (n = 129) II (n = 105)
APGAR Score twin 1 8.4 ± 2.0 7.9 ± 2.5 1.69 0.093
APGAR Score twin 2 8.0 ± 2.4 7.4 ± 2.6 1.76 0.079
Total I (n = 129) II (n = 105) t-value p-value
Combined Presentation
 Breech-non-vertex 61 (26.1) 38 (29.5) 23 (21.9)
 Breech-vertex 29 (12.4) 19 (14.7) 10 (9.5)
 Non-vertex-nonvertex 8 (3.4) 5 (3.9) 3 (2.8) 5.56 0.352
 Oblique-vertex 3 (1.3) 1 (0.8) 2 (1.9)
 Vertex-non-vertex 44 (18.8) 24 (18.6) 20 (19.0)
 Vertex-vertex 89 (38.0) 42 (32.6) 47 (44.7)
Combined Twin Delivery route
 CS-CS 138 (59.0) 85 (65.9) 53 (50.5)
 Instrument-instrument 1 (0.43) 1 (0.8) 0 (0.0)
 Inst-vaginal delivery 1 (0.43) 1 (0.8) 0 (0.0)
 Vaginal-CS 1 (0.43) 1 (0.8) 1 (0.9)
 Vaginal-instrument 2 (0.85) 1 (0.8) 1 (0.9) 11.47 0.119
 Vaginal delivery-breech extraction 2 (0.9) 1 (0.8) 1 (0.9)
 Vaginal delivery-CS 2 (0.9) 1 (0.8) 1 (0.9)
 Vaginal delivery-vaginal delivery 87 (37.2) 38 (29.5) 49 (46.7)
Combined Gender of Twins
 Different Sex 84 (36.0) 35 (33.3) 49 (38.0)
 Same sex (Female) 75 (32.0) 36 (34.3) 39 (30.2) 0.65 0.722
 Same sex (Male) 75 (32.0) 34 (32.4) 41 (31.8)

CS, caesarean section; SD, standard deviation.