Chlamydia trachomatis Serology in Women with and without Ovarian Cancer

Table 2

Frequencies and adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for chlamydial elementary bodies optical density (OD) units, in cases and controls, categorized by previously defined cut points. (ORs were adjusted for age, education, family history of ovarian cancer, tubal ligation, nulliparity/any parity, and years of oral-contraceptive use).

	Chlamydia EB
OD units	Case subjects	Control subjects	OR (95% CI)
<0.10	248	342	1.0
0.10–0.199	138	173	1.1 (0.8–1.5)
0.20–0.399	73	113	0.9 (0.6–1.2)
≥0.40	62	138	0.6 (0.4–0.9)