Table 1 Basic characteristics of cervical cancer cases and cancer-free controls
Variables | Cases (n = 591) | Controls (n = 373) | P |
|---|---|---|---|
N (%) | N (%) | ||
Age, years | Â | Â | 0.36 e |
 < 50 | 339(57.36) | 226(60.59) |  |
 ≥ 50 | 252(42.64) | 147(39.41) |  |
HPV16 |  |  | < 0.001e |
 Negative | 268(45.35) | 300(80.43) |  |
 Positive | 323(54.65) | 73(19.57) |  |
HPV18 | Â | Â | 0.43 e |
 Negative | 532(90.02) | 342(91.69) |  |
 Positive | 59(9.98) | 31(8.31) |  |
HPV52 |  |  | < 0.001e |
 Negative | 488(82.57) | 272(72.92) |  |
 Positive | 103(17.43) | 101(27.08) |  |
HPV58 | Â | Â | 0.005e |
 Negative | 536(90.69) | 315(84.45) |  |
 Positive | 55(9.31) | 58(15.55) |  |
Other type a |  |  | < 0.001e |
 Negative | 481(81.39) | 239(64.08) |  |
 Positive | 110(18.61) | 134(35.92) |  |
Multiple infection | Â | Â | 0.15e |
 Negative | 538(91.03) | 350(93.83) |  |
 Positive | 53(8.97) | 23(6.17) |  |
Grade b | |||
 High | 27(7.99) |  |  |
 Middle | 178(52.66) |  |  |
 Low | 133(39.35) |  |  |
Histology c | |||
 Squamous | 536(94.87) |  |  |
 Adeno/adenosquamous | 29(5.13) |  |  |
FIGO d | |||
 I/II | 366(83.75) |  |  |
 III/IV | 71(16.25) |  |  |
 mtCN (median, quartile) | 1.63(0.59–3.43) | 1.23(0.53–2.76) | 0.03f |