Table 3: Frequencies and adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for chlamydial elementary bodies, categorized by quartiles, in case and control subjects. (ORs were adjusted for age, education, family history of ovarian cancer, tubal ligation, nulliparity/any parity, and years of oral-contraceptive use.)

Chlamydia EB

EB quartilesCase subjectsControl subjectsOR (95% CI)

<0.061331891.0
0.06–0.111331891.1 (0.8–1.5)
0.11–0.241461761.2 (0.9–1.7)
≥0.251092120.7 (0.5–1.1)