Cases N = 85 (%)

Controls N = 85 (%)

Chlamydia IgG index

0 - 0.99

1 - 1.99

2 - 2.99

≥3

32 (37.6)

13 (15.3)

30 (35.3)

10 (11.8)

60 (71)

16 (19)

6 (7)

3 (3)

p = 0.0001