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Table 3 Logistic regression with backward elimination

From: Analysis of maternal and perinatal determinants of allergic sensitization in childhood

Predictive variable

OR

95% CI

P

Maternal age

< 0.001

 < 20 years

0.806

0.433–1.503

 

 20 to 35

Reference

 

 > 35 years

1.912

1.383–2.642

 

Maternal smoking: yes

0.469

0.303–0.727

0.001

Maternal BMI

0.004

 Underweight

1.303

0.873–1.947

 

 Normal weight

Reference

 

 Overweight

0.742

0.530–1.040

 

 Obesity class I

0.614

0.391–0.964

 

 Obesity class II

0.340

0.149–0.775

 

 Obesity class III

0.621

0.302–1.278

 

Infant sex: male

1.423

1.093–1.854

0.009

Preterm birth: yes

0.484

0.269–0.870

0.015

Conception: Assisted

1.771

1.076–2.914

0.025

Parity

0.881

0.785–0.988

0.031

  1. R2 = 0.03. P < 10−10. Mode of conception was defined as assisted or spontaneous
  2. OR odds ratio, CI confidence interval