Table 1. Frequency distribution of select variables in cervical cancer cases and controls.
| Variablesa |
Test set |
P |
Validation set |
P | ||
|---|---|---|---|---|---|---|
| Cases | Controls | Cases | Controls | |||
| n = 571 (%) | n = 657 (%) | n = 555 (%) | n = 580 (%) | |||
| Age, year (mean ± SD) | 47.5 ± 10.1 | 47.3 ± 10.6 | 0.726 | 51.3 ± 9.3 | 51.2 ± 11.0 | 0.789 |
| Parity | ||||||
| 0–1 | 324 (58.3) | 446 (75.2) | <0.001 | 297 (54.6) | 455 (82.4) | <0.001 |
| ≥2 | 232 (41.7) | 147 (24.8) | 247 (45.4) | 97 (17.6) | ||
| Abortion | ||||||
| No | 158 (29.5) | 156 (28.0) | 0.565 | 215 (39.7) | 217 (39.5) | 0.942 |
| Yes | 377 (70.5) | 402 (72.0) | 326 (60.3) | 332 (60.5) | ||
| Menopausal status | ||||||
| Premenopausal | 306 (56.0) | 476 (78.9) | <0.001 | 291 (52.8) | 233 (42.6) | <0.001 |
| Postmenopausal | 240 (44.0) | 127 (21.1) | 260 (47.2) | 314 (57.4) | ||
| Histologic types | ||||||
| Squamous cell carcinoma | 538 (94.2) | 506 (91.2) | ||||
| Adenocarcinomas | 24 (4.2) | 28 (5.1) | ||||
| Adenosquamous carcinoma | 4 (0.7) | 12 (2.2) | ||||
| Othersb | 5 (0.9) | 9 (1.5) | ||||
| Depth of invasion | ||||||
| I | 383 (68) | 357 (65.0) | ||||
| II | 145 (25.8) | 189 (34.4) | ||||
| III | 28 (5.0) | 2 (0.4) | ||||
| IV | 7 (1.2) | 1 (0.2) | ||||
aSome cases lack information of selected variables.
bOther histological types, such as cervical choriocarcinoma.