Table 1.
Clinical and demographic characteristics of patients with cervical squamous cell carcinoma and controls
| Characteristic | Patients (n = 486) | Controls (n = 511) | p valueb |
|---|---|---|---|
| Mean age (years)a ± SD | 51.5 ± 9.7 | 51.8 ± 9.5 | |
| Tumor stage, n (%) | |||
| IA | 67 (13.8) | ||
| IB | 65 (13.4) | ||
| IIA | 64 (13.2) | ||
| IIB | 56 (11.5) | ||
| IIIA | 155 (31.9) | ||
| IIIB | 54 (11.1) | ||
| IVA | 13 (2.7) | ||
| IVB | 12 (2.5) | ||
| Histological grade, n (%) | |||
| G1 | 99 (20.4) | ||
| G2 | 152 (31.3) | ||
| G3 | 104 (21.4) | ||
| Gx | 131 (27.0) | ||
| Parity, n (%) | |||
| Never | 58 (11.9) | 63 (12.3) | 0.849 |
| Ever | 428 (88.1) | 448 (87.7) | |
| Oral contraceptive pill use, n (%) | |||
| Never | 263 (54.1) | 289 (56.6) | 0.438 |
| Ever | 223 (45.9) | 222 (43.4) | |
| Tobacco smoking, n (%) | |||
| Never | 309 (63.6) | 337 (65.9) | 0.434 |
| Ever | 177 (36.4) | 174 (34.1) | |
| Menopausal status, n (%) | |||
| Premenopausal | 171 (35.2) | 197 (38.6) | 0.271 |
| Postmenopausal | 315 (64.8) | 314 (61.4) | |
| HPV genotypes, n (%) | |||
| 16 and 18 | 326 (67.1) | ||
| 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, and 68 | 368 (75.7) | ||
HPV human papillomavirus virus, SD standard deviation
aAge at first diagnosis
bChi-squared, p value