Table 3 Three logistic regression models of factors predicting extension failure. The third model, is the simplest and most predictive

Model 1

Respiratory co-morbidity

3.13

1.32 - 7.42

6.66

0.01

0.048

Model 2

Respiratory co-morbidity

2.74

1.09 - 6.87

4.62

0.03

0.078

^bGestational diabetes

2.34

0.77 - 7.37

2.25

0.13

^cBMI

1.67

0.66 - 4.24

1.17

0.28

Model 3

Respiratory co-morbidity

3.19

1.32 - 7.70

6.66

0.01

0.069

Gestational diabetes

2.72

0.90 - 8.27

3.13

0.08