TABLE 1. General Characteristics of Participants in the Central and Eastern European Renal Cell Carcinoma Study.
| Variables | Cases | Controls | P | ||
|---|---|---|---|---|---|
| N | % * | N | %* | ||
| Participants | 1097 | 42.6 | 1476 | 57.4 | |
| Sex | |||||
| Male | 648 | 59.1 | 952 | 64.5 | |
| Female | 449 | 40.9 | 524 | 35.5 | 0.01 |
| Age at interview, yr | |||||
| <45 | 86 | 7.8 | 122 | 11.1 | |
| 45--54 | 278 | 25.3 | 379 | 34.5 | |
| 55--64 | 335 | 30.5 | 460 | 41.9 | |
| 65--74 | 353 | 32.2 | 452 | 41.2 | |
| 75+ | 45 | 4.1 | 63 | 5.7 | 0.50 |
| Center | |||||
| Romania-Bucharest | 95 | 8.7 | 160 | 10.8 | |
| Poland-Lodz | 99 | 8.7 | 198 | 13.4 | |
| Russia-Moscow | 317 | 28.9 | 463 | 31.4 | |
| Czech Republic† | 586 | 53.4 | 655 | 44.4 | <0.001 |
| Body mass index at interview | |||||
| <25 | 327 | 29.8 | 532 | 36.0 | |
| 25--29.9 | 476 | 43.4 | 620 | 42.0 | |
| 30+ | 294 | 26.8 | 324 | 22.0 | <0.001 |
| Tobacco status | |||||
| Never | 510 | 46.5 | 599 | 40.6 | |
| Ever | 584 | 53.2 | 874 | 59.2 | 0.003 |
| Hypertension | |||||
| No | 600 | 54.7 | 906 | 61.4 | |
| Yes | 496 | 45.2 | 569 | 38.6 | 0.001 |
| Familial history of cancer | |||||
| No first-degree relative with cancer | 733 | 66.8 | 1074 | 72.8 | |
| First-degree relative with cancer | 364 | 33.2 | 402 | 27.2 | 0.001 |
*
Because of missing values, some categories do not sum to 100%.
†
Brno, Olomouc, Prague, Ceske-Budejovice.