Table 2

Bi variate analysis of cases and controls by selected present and past obstetric factors
Cases Controls CRUDE OR 95%CI
Maternal age
 <25 32 20 2.25 1.07, 4.73
26-30 42 59 1 1
Parity
I 65 78 0.83 0.3, 2.31
II 26 15 1.73 0.51, 5.89
III and above 10 10 1
Gestational age in weeks
 <40 31 32 1.03 0.56, 1.97
 40 18 20 1.13 0.53, 2.39
 >40 52 51 1
Inter delivery interval
 <2yrs 17 9 1
2.1-4 14 22 0.34 0.1,1.08
4-6 24 30 0.42 0.14,1.23
 >6 46 42 0.58 0.21,1.58
History of stillbirth
 yes 10 21 1
 No 91 82 2.46 1.03,5.98
PAST C/S INDICATION
 Known 79 93 0.39 0.16, 0.92
 Unknown 22 10 1
Indication of the past cesarean section
 Fetal distress 16 25 0.29 0.1,0.86
Malpresentation 17 19 0.41 0.13,1.22
 Big baby 10 11 0.41 0.11,1.40
Failed Induction 10 14 0.32 0.09,1.12
 CPD 12 14 0.39 0.11, 1.38
 Others 14 10 0.64 0.18, 2.2
 Unknown 22 10 1 1
Health of baby of past C/S
 Live 95 87 2.91 1.01, 8.77
 Dead 6 16 1
Prior successful VBAC in the past
 Yes 20 7 3.39 1.27, 9.34
 No 81 96 1
SVD before c/s
 Yes 22 18 1.32 0.62, 2.79
 No 79 85 1
ROM at admission
 Yes 52 40 1.67 0.92, 3.03
 No 49 63 1
Duration of ROM
 <12hrs 40 25 6.4 1.46, 32.1
 >12 hrs 3 12 1
Presence of Meconium
 Yes 11 27 1
 No 90 76 2.19 1.28, 6.72
Cervical Dilation at admission in cm
 ≤ 3 28 70 1
 >3 73 33 5.53 2.91,10.56
Position of presenting part
 OA 38 21 1
 OP/PT 10 18 0.31 0.11, 0.86
 UK 53 64 0.46 0.23, 0.92
Duration of labour after admission in Hours
 <4 hrs 56 42 1
 >4 hrs 45 61 1.81 1, 3.28
Birth weight in grams
 <2500 7 3 5.83 0.48, 93.2
 2500-4000 92 95 2.42 0.4, 18.5
 >4000 2 5 1

Birara and Gebrehiwot

Birara and Gebrehiwot BMC Pregnancy and Childbirth 2013 13:31   doi:10.1186/1471-2393-13-31

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