# Table 6 Predicting factors of normal vaginal birth in women who planned for normal vaginal birth (N = 662)

Variables Simple logistic regression Multiple logistic regression
Normal vaginal birth (N = 478) Emergency Cesarean (N = 144) OR P AOR 95% C.I for OR
Lower Upper
Age (years)
< 20 37 (7.1) 11 (7.6) 1.27 .082 2.157 .906 5.137
20–30 280 (54.1) 57 (39.6) 1.86** <.001 2.396 1.469 3.909
> 30 201 (38.8) 76 (52.8) 1   1
Educational level (years)
< 12 109 (75.7) 403 (77.8) 1.125
> 12 35 (24.3) 115 (22.2) 1
Job
Housewife 472 (91.1) 131 (91.0) 1.02
Employed 46 (8.9) 13 (9.0) 1
Satisfaction with household income
Low satisfied 180 (34.7) 59 (41.0) 1
Moderately satisfied/satisfied 338 (65.3) 85 (59.3) 1.30
Gestational age (week)
< 38 51 (9.8) 39 (27.1) 1   1
38–40 391 (75.5) 90 (62,5) 3.22*** <.001 3.244 1.818 5.788
> 40 76 (14.7) 15 (10.4) 3.87*** .001 3.801 1.685 8.577
Birth weight (gr)
< 2500 g 42 (8.1) 18 (12.5) 1.50 .007 5.008 1.556 16.123
2500–3999 462 (89.2) 117 (81.3) 2.54* .007 3.657 1.416 9.446
> 4000 14 (2.7) 9 (6.3) 1   1
Having a doula
No 348 (67.2) 129 (89.6) 1   1
Yes 170 (32.8) 15 (10.4) 4.20*** <.001 4.419 2.420 8.068
Parity
Primipara 215 (41.5) 68 (47.2) 1   1
Multipara 303 (58.5) 76 (52.8) 1.26† .010 1.937 1.175 3.192
Infant gender
Female 268 (51.7) 80 (55.6) 1
Male 250 (48.3) 64 (44.4) 1.17
Onset of labor pain
Spontaneous 375 (72.4) 83 (57.6) 1.72** .030 1.624 1.049 2.515
Induced 143 (27.6) 61 (43.4) 1   1
Satisfaction with husband support
Not satisfied to low satisfied 99 (19.1) 44 (30.6) 1   1
Moderately satisfied 243 (46.9) 58 (40.3) 1.86** .001 2.543 1.475 4.387
Satisfied/Very satisfied 176 (34.0) 42 (29.1) 1.86* .063 2.024 .964 4.251
Perceived marital/sexual satisfaction
Not satisfied to moderately satisfied 56 (10.8) 12 (8.3) 1 1
Satisfied 260 (50.2) 83 (57.6) .67 .015 .374 .169 .827
Very satisfied 202 (39.0) 49 (34.0) .88 .076 .423 .164 1.096
Satisfaction with pregnancy
Not satisfied/ Low satisfied 67 (12.9) 36 (25.0) 1   1
Moderately satisfied 190 (36.7) 52 (36.1) 1.46 .345 1.547 .626 3.827
Satisfied 204 (39.4) 53 (36.8) 2.49* .042 2.285 1.031 5.063
Very satisfied 57 (11) 3 (2.1) 3.18** .012 2.741 1.248 6.020
1. *p < .05, ** p < .01, ***p < .001, simple logistic regression: p < 0.25
2. Variables entered on step 1: having a doula, income, parity, birth weight, gestational age, mother’s age, onset of labor pain, maternal satisfaction with pregnancy, satisfaction with husband support, satisfaction with marital/sexual relationship. Method: backward, LR Cox & Snell R Square = 14.5%, Nagelkerke R Square = 22.4%