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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

VariablesOR (95% CI)P
1. Demographic
Marital satisfaction (Reference: Yes)
No1.92 (0.93 to 3.94)0.075
Insurance (Reference: Yes)
No1.45 (1.07 to 1.97)0.014
Economic status (reference: High)
Low1.90 (1.05 to 3.43)0.033
Middle1.53 (0.91 to 2.59)0.106
Source of support (Reference: Husband)
Mother or father1.62 (1.13 to 2.33)0.009
Relative1.51 (0.99 to 2.31)0.052
Sister or brother1.02 (0.42 to 2.47)0.954
Nobody0.64 (0.19 to 2.16)0.481
2. Pregnancy
Doing exercise during pregnancy (Reference: Yes)
No3.19 (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 h1.59 (1.13 to 2.24)0.007
Permission for moving during labour (Reference: Yes)
No1.79 (1.27 to 2.52)0.001
Free in select of childbirth position (Reference: Yes)
No1.79 (0.91 to 3.50)0.087
Fear of childbirth (Reference: No)
Yes3.06 (2.15 to 4.36)< 0.001
Use of one of the pain relief methods (reference: Yes)
No2.96 (2.07 to 4.23)< 0.001
Augmentation (reference: No)
Yes1.49 (1.05 to 2.10)0.022
Childbirth place (reference: Organizational)
Teaching1.72 (1.01 to 2.93)0.043
Private0.73 (0.37 to 1.43)0.366
4. All variables  
Use of one of the pain relief methods (reference: Yes)
No4.24 (2.12 to 8.50)< 0.001
Fear of childbirth (Reference: No)
Yes3.47 (1.68 to 7.19)0.001
Doing exercise during pregnancy (Reference: Yes)
No2.81 (1.40 to 5.63)0.003
Presence of companion (reference: Yes)
No3.30 (0.80 to 10.86)0.108
Free in select of childbirth position (Reference: Yes)
No4.64 (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