Table 1. Distribution characteristics of 855 renal cell cancer case and 1204 control subjects.
Cases, no. (%)a | Controls, no. (%)a | |
---|---|---|
Age (years) | ||
20–39 | 18 (2) | 18 (2) |
40–49 | 58 (7) | 72 (6) |
50–59 | 185 (21) | 234 (19) |
60–69 | 263 (31) | 422 (35) |
70–79 | 331 (39) | 458 (38) |
Body mass index (kg m−2) | ||
⩽22.0 | 157 (18) | 287 (24) |
22.1–23.5 | 184 (22) | 284 (24) |
23.6–24.9 | 187 (22) | 293 (24) |
>25.0 | 299 (35) | 288 (24) |
Cigarette smoking | ||
Never smoked | 381 (45) | 580 (48) |
⩽16.7 pack-years | 240 (28) | 310 (26) |
>16.7 pack-years | 225 (26) | 280 (23) |
Education (years) | ||
<10 | 539 (63) | 712 (59) |
10–12 | 177 (21) | 241 (20) |
>12 | 138 (16) | 244 (20) |
Hypertension | ||
Ever | 318 (37) | 291 (24) |
Never | 534 (62) | 909 (75) |
Diabetes | ||
Yes | 102 (12) | 65 (5) |
No | 747 (87) | 1134 (94) |
Numbers and percentages do not add up to the total because of missing values for specific variables.