Table 1 Selected characteristics of study participants by race and case-control status
From: Physical activity and renal cell carcinoma among black and white Americans: a case-control study
Black | White | |||
|---|---|---|---|---|
Variable, N (weighted %) | Controls (N = 523) | Cases (N = 361) | Controls (N = 712) | Cases (N = 856) |
Study Site | ||||
Chicago | 96 (21) | 81 (21) | 101 (16) | 118 (15) |
Detroit | 427 (79) | 280 (79) | 611 (84) | 738 (85) |
Age, years | ||||
20-44 | 86 (12) | 41 (12) | 93 (10) | 106 (10) |
45-54 | 125 (26) | 102 (26) | 145 (20) | 185 (20) |
55-64 | 145 (30) | 117 (30) | 205 (29) | 255 (26) |
65-74 | 133 (24) | 82 (24) | 196 (28) | 221 (28) |
75+ | 34 (8) | 19 (8) | 73 (13) | 89 (13) |
Sex | ||||
Male | 250 (61) | 225 (61) | 439 (62) | 495 (62) |
Female | 273 (39) | 136 (39) | 273 (38) | 361 (38) |
Education | ||||
<12 years | 100 (19) | 97 (28) | 65 (9) | 103 (13) |
High school graduate | 176 (34) | 104 (29) | 214 (31) | 315 (37) |
Some college | 172 (32) | 113 (30) | 184 (26) | 215 (25) |
4+ years college | 75 (15) | 47 (13) | 249 (35) | 223 (26) |
Body mass index, kg/m2 | ||||
<25 | 150 (28) | 68 (19) | 216 (29) | 172 (19) |
25- < 30 | 199 (40) | 126 (36) | 294 (42) | 310 (37) |
30- < 35 | 95 (19) | 88 (24) | 126 (18) | 210 (25) |
35+ | 73 (13) | 74 (20) | 74 (10) | 156 (17) |
Missing | 6 (1) | 5 (1) | 2 (<1) | 8 (1) |
Smoking satus | ||||
Never | 184 (34) | 123 (34) | 287 (40) | 309 (36) |
Occasional | 30 (5) | 21 (6) | 25 (3) | 34 (4) |
Former | 169 (34) | 106 (29) | 276 (39) | 304 (37) |
Current | 140 (26) | 111 (31) | 124 (17) | 209 (23) |
Family history of cancer | ||||
None | 288 (54) | 183 (51) | 278 (38) | 334 (38) |
Cancer other than kidney | 220 (44) | 152 (42) | 413 (59) | 484 (57) |
Kidney cancer | 9 (1) | 19 (5) | 15 (2) | 33 (4) |
Missing | 7 (2) | 6 (1) | 6 (1) | 5 (1) |
Hypertension | ||||
Yes | 246 (48) | 256 (71) | 262 (38) | 445 (54) |
No | 273 (51) | 102 (29) | 445 (61) | 398 (44) |
Missing | 4 (1) | 3 (<1) | 5 (1) | 13 (2) |