Yes

4 (25.00)

12 (75.00)

7.93 (2.29 - 27.49)

0.001*

17.34 (2.67 - 112.56)

0.003*

No

15 (4.04)

356 (95.96)

Reference

Reference

Gravidity

<2

6 (5.77)

98 (94.23)

0.96 (0.23 - 4.00

0.954

/

2 - 4

10 (4.29)

223 (95.71)

0.70 (0.19 - 2.65)

0.602

/

≥5

3 (6.00)

47 (94.00)

Reference

Parity

<2

13 (5.51)

223 (94.49)

0.47 (0.05 - 4.00)

0.486

/

2 - 4

5 (3.52)

137 (96.48)

0.29 (0.03 - 2.79)

0.285

/

≥5

1 (11.11)

8 (88.89)

Reference

Past history of PROM

Yes

3 (27.27)

8 (72.73)

8.44 (2.04 - 34.85)

0.003*

3.18 (0.23 - 44.04)

0.388

No

16 (4.26)

360 (95.74)

Reference

Reference

Past history of abortion

Yes

4 (5.33)

71 (94.67)

1.12 (0.36 - 3.46)

0.850

/

No

15 (4.81)

297 (95.19)

Reference

Past history of preterm delivery

Yes

3 (37.50)

5 (62.50)

13.61 (2.98 - 62.01)

0.001*

27.65 (1.76 - 434.15)

0.018*

No

16 (4.22)

363 (95.78)

Reference

Reference

Past history of Caesarean section

Yes

3 (5.17)

55 (94.83)

1.06 (0.30 - 3.78)

0.918

/

No

16 (4.86)

313 (95.14)

Reference