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Table 4 Forward logistic regression model for the occurrence of PTB.

From: Risk factors for pre-term birth in Iraq: a case-control study

variables OR p-value 95% CI
    lower upper
anxiety 2.16 <0.001 1.28 3.64
occasional meat consumption 4.33 <0.001 2.60 7.22
Presence of and caring for domestic animal 5.06 <0.001 2.44 10.58
manual work 1.70 <0.05 1.02 2.84
urinary tract infection 2.85 <0.001 1.63 4.98
direct trauma to the abdomen 3.76 <0.001 1.77 7.98
abortion 6.36 <0.001 2.77 14.63
cervical incompetence 4.74 <0.001 2.29 9.79
multiple gestation 7.51 <0.01 1.89 29.87