Variables

DC+

DC−

Crude OR

Adjusted OR (95% CI)

P value

Age > 35 years

30

117

3.35

0.29 (0.14 - 0.60)

0.001

Gravidity < 3

18

86

3.54

0.28 (0.12 - 0.65)

0.003

Parity < 3

35

129

3.42

0.29 (0.14 - 0.58)

0.001

Frequency of sexual intercourse/week

23

83

2.39

0.25 (0.10 - 0.60)

0.001

No past history of abortion

28

99

2.60

0.24 (0.10 - 0.56)

0.001