]>

Table 4: Frequencies and adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for chlamydial elementary bodies optical-density (OD) units, in case and control subjects stratified by age.

OD units Case subjects Control subjects OR (95% CI) Age 24–49 <0.10 69 82 1.0 0.10–0.199 32 42 0.9 (0.5–1.6) 0.20–0.399 18 37 0.6 (0.3–1.1) ≥0.40 16 43 0.4 (0.2–0.9) Trend = .007 Age 50–56 <0.10 55 103 1.0 0.10–0.199 22 47 0.9 (0.5–1.6) 0.20–0.399 15 20 1.4 (0.7–3.0) ≥0.40 19 38 0.9 (0.5–1.8) Trend = .908 Age 57–66 <0.10 58 88 1.0 0.10–0.199 41 38 1.6 (0.9–2.8) 0.20–0.399 19 31 0.9 (0.5–1.8) ≥0.40 11 30 0.6 (0.3–1.2) Trend = .227 Age ≥67 <0.10 66 69 1.0 0.10–0.199 43 46 1.0 (0.6 –1.7) 0.20–0.399 21 25 0.9 (0.4 –1.7) ≥0.40 16 27 0.6 (0.3 –1.3) Trend = .217