Table 2 The potential risk factors in relation to HPV infection in 40311 women
Characteristics | No. of case (%)(N) | No. of HPV+(n) | n/N | %(95%CI) | |
|---|---|---|---|---|---|
Smoking | Never | 37876 (94.0) | 9867 | 9845/37876 | 25.9 (23.1–29.2) |
Former | 1385 (3.4) | 394 | 394/1385 | 28.4 (25.3–32.6) | |
Current | 1050 (2.6) | 281 | 303/1050 | 28.8 (26.1–31.3) | |
The age at first sex (y) | ≤20 | 8884 (22.0) | 2307 | 2307/8884 | 25.9 (23.3–27.2) |
21–25 | 18768 (46.6) | 4979 | 4979/18768 | 26.5 (22.1–27.4) | |
≥26 | 12659 (31.4) | 3256 | 3256/12659 | 25.7 (23.1–28.1) | |
The number of sex partners | 1 | 28960 (71.8) | 7071 | 7271/28960 | 25.1 (22.4–27.9) |
2 | 7659 (19.0) | 2076 | 2076/7659 | 27.1 (24.3–30.4) | |
≥3 | 3692 (9.2) | 1395 | 1195/3692 | 32.3 (34.1–40.2) |