Prognostic variables

Unit of comparison

OR

95% CI

P-value

Lenght of cervical

+1 mm

1.56

0.84 - 2.9

0.12

Openning cervical

+1 cm

0.9

0.74 - 1.09

0.20

UA before cerclage

Yes vs No

0.76

0 - 174.2

0.92

UA after cerclage

Yes vs No

0.11

0 - 16.13

0.33

GA when cerclage

+1 week

4.74

1.77 - 29.21

0.01

Betamethasone

Yes vs No

0.43

0 - 41.54

0.71