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Table 6 Multivariable Regression Logistic model for the traumatic birth experience and influencing factors (n = 800)

From: Predictors of traumatic birth experience among a group of Iranian primipara women: a cross sectional study

Variables OR (95% CI) P
1. Demographic
Marital satisfaction (Reference: Yes)
No 1.92 (0.93 to 3.94) 0.075
Insurance (Reference: Yes)
No 1.45 (1.07 to 1.97) 0.014
Economic status (reference: High)
Low 1.90 (1.05 to 3.43) 0.033
Middle 1.53 (0.91 to 2.59) 0.106
Source of support (Reference: Husband)
Mother or father 1.62 (1.13 to 2.33) 0.009
Relative 1.51 (0.99 to 2.31) 0.052
Sister or brother 1.02 (0.42 to 2.47) 0.954
Nobody 0.64 (0.19 to 2.16) 0.481
2. Pregnancy
Doing exercise during pregnancy (Reference: Yes)
No 3.19 (1.79 to 5.77) < 0.001
3. Labour and childbirth
Duration of stay in the labour room (Reference: Less than 12 h)
More than 12 h 1.59 (1.13 to 2.24) 0.007
Permission for moving during labour (Reference: Yes)
No 1.79 (1.27 to 2.52) 0.001
Free in select of childbirth position (Reference: Yes)
No 1.79 (0.91 to 3.50) 0.087
Fear of childbirth (Reference: No)
Yes 3.06 (2.15 to 4.36) < 0.001
Use of one of the pain relief methods (reference: Yes)
No 2.96 (2.07 to 4.23) < 0.001
Augmentation (reference: No)
Yes 1.49 (1.05 to 2.10) 0.022
Childbirth place (reference: Organizational)
Teaching 1.72 (1.01 to 2.93) 0.043
Private 0.73 (0.37 to 1.43) 0.366
4. All variables   
Use of one of the pain relief methods (reference: Yes)
No 4.24 (2.12 to 8.50) < 0.001
Fear of childbirth (Reference: No)
Yes 3.47 (1.68 to 7.19) 0.001
Doing exercise during pregnancy (Reference: Yes)
No 2.81 (1.40 to 5.63) 0.003
Presence of companion (reference: Yes)
No 3.30 (0.80 to 10.86) 0.108
Free in select of childbirth position (Reference: Yes)
No 4.64 (0.94 to 2.81) 0.059
  1. * Adjusted for all other demographic variables with a relation of p < 0.1 in the bivariate analysis. Variables of husband education, marriage length and income status were removed from the model. P = 0.934 for Hosmer & Lemeshow test of the goodness of fit, Nagelkerkes R2 = 0.052
  2. * Adjusted for all other pregnancy variables with a relation of p < 0.1 in the bivariate analysis. Variables of gravida, planned pregnancy, wanted pregnancy and exercise number class were removed from the model. P = 0.623 for Hosmer & Lemeshow test of the goodness of fit, Nagelkerkes R2 = 0.095
  3. * Adjusted for all other labour and childbirth variables with a relation of p < 0.1 in the bivariate analysis. Variable of midwife’s continuous presence was removed from the model. P = 0.969 for Hosmer & Lemeshow test of the goodness of fit, Nagelkerkes R2 = 0.254
  4. * Adjusted for all other variables with a relation of p < 0.1 in the bivariate analysis. P = 0.490 for Hosmer & Lemeshow test of the goodness of fit, Nagelkerkes R2 = 0.448