Table 2.
Frequency distribution of select features by case control status
| Variable | Control | CIN III | χ2* | P | Carcinoma | χ2* | P | |
|---|---|---|---|---|---|---|---|---|
| N=1200, N(%) | N=400, N(%) | N=400, N(%) | ||||||
| Age | ≤40 | 602 (50.2) | 258(64.5) | 24.793 | <0.001 | 160(40.0) | 12.431 | <0.001 |
| >40 | 598(49.8) | 142(35.5) | 240(60.0) | |||||
| Age at the first intercourse | ≤20 years | 359(29.9) | 130(32.5) | 0.943 | 0.331 | 125(31.3) | 0.253 | 0.615 |
| >20 years | 841(70.1) | 270(67.5) | 275(68.8) | |||||
| Number of sexual partners | ≤ 1 | 963(80.3) | 316(79.0) | 0.292 | 0.589 | 309(77.3) | 1.657 | 0.198 |
| >1 | 237(19.8) | 84(21.0) | 91(22.8) | |||||
| Age at the first birth | ≤22years | 235(19.6) | 91(22.8) | 1.854 | 0.173 | 89(22.3) | 1.321 | 0.25 |
| >22 years | 965(80.4) | 309(77.3) | 311(77.8) | |||||
| Number of parities** | ≤ 3 | 548(45.7) | 158(39.5) | 4.627 | 0.031 | 131(32.8) | 20.49 | <0.001 |
| >3 | 652(54.3) | 242(60.5) | 269(67.3) | |||||
| Smoking status | smoker | 4(0.3) | 2(0.5) | 0.223 | 0.637 | 2(0.5) | 0.223 | 0.637 |
| nonsmoker | 1196(99.7) | 398(99.5) | 398(99.5) | |||||
| HR-HPV infection | Positive | 191(31.4) | 310(86.8) | 277.107 | <0.001 | 178(88.6) | 199.315 | <0.001 |
| Negative | 418(68.6) | 47(13.2) | 23(11.4) | |||||
| total | 609 | 357 | 201 | |||||
Bold values show statistical data with significant difference.* Two-sided χ2 test. ** Parities including full-term pregnancy and abortion at or after 28 weeks