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Table 3 Frequency of Chlamydia trachomatis according to sexual and obstetric history

From: Frequency of Chlamydia trachomatis infection in cervical intraepithelial lesions and the status of cytological p16/Ki-67 dual-staining

Age at sexual debut (years)
 < 15 299 84.0 57 16.0 1 356 0.875
 16–19 622 84.6 113 15.4 0.95 (0.7–1.3) 735
 > 19 298 85.4 51 14.6 0.90 (0.6–1.3) 349
Number of Lifetime Partners
 1–4 1022 85.3 176 14.7 1 1198 0.015
 5–10 195 82.3 42 17.7 1.25 (0.9–1.8) 237
 > 10 12 60.0 8 40.0 3.87 (1.56–9.61) 20
Number of Partners in the Past Year
 0–1 1160 84.7 209 15.3 1 1369 0.709
 2–4 75 81.5 17 18.5 1.26 (0.7–2.2) 92
 > 4 5 83.3 1 16.7 1.11 (0.1–9.5) 6
Parity
 0 230 85.2 40 14.8 1 270 0.804
 1–2 543 85.0 96 15.0 1.02 (0.7–1.5) 639
 > 2 443 83.7 86 16.3 1.12 (0.7–1.7) 529
Prior STD
 No 999 85.5 170 14.5 1 1169 0.083
 Yes 130 80.2 32 19.8 1.45 (0.9–2.2) 162