Table 1.
Selected demographic and health characteristics of renal cell carcinoma cases and controls in the PLCO Cancer Screening Trial
| Characteristic | Study participants, No. (%)a |
||
|---|---|---|---|
| Controls (n = 324) | Cases (n = 324) | P b | |
| Age,c y | |||
| 55-59 | 95 (29.3) | 95 (29.3) | — |
| 60-64 | 112 (34.6) | 112 (34.6) | |
| 65-69 | 80 (24.7) | 80 (24.7) | |
| 70+ | 37 (11.4) | 37 (11.4) | |
| Center | |||
| Colorado | 20 (6.2) | 20 (6.2) | — |
| Georgetown (Washington, DC) | 15 (4.6) | 15 (4.6) | |
| Hawaii | 9 (2.8) | 9 (2.8) | |
| Henry Ford (Michigan) | 37 (11.4) | 37 (11.4) | |
| Minnesota | 84 (25.9) | 84 (25.9) | |
| Washington University (Missouri) | 33 (10.2) | 33 (10.2) | |
| University of Pittsburgh (Pennsylvania) | 40 (12.4) | 40 (12.4 | |
| University of Utah | 27 (8.3) | 27 (8.3) | |
| Marshfield (Wisconsin) | 46 (14.2) | 46 (14.2) | |
| University of Alabama | 13 (4.0) | 13 (4.0) | |
| Sex | |||
| Male | 216 (66.7) | 216 (66.7) | — |
| Female | 108 (33.3) | 108 (33.3) | |
| Race | |||
| White, non-Hispanic | 287 (88.6) | 287 (88.6) | — |
| Black, non-Hispanic | 21 (6.5) | 21 (6.5) | |
| Other | 16 (4.9) | 16 (4.9) | |
| Body mass index,c kg/m2 | |||
| <18.5 | 3 (0.9) | 2 (0.6) | .008 |
| 18.5 to <25 | 83 (25.6) | 71 (21.9) | |
| 25 to <30 | 158 (48.8) | 135 (41.7) | |
| 30+ | 76 (23.5) | 115 (35.5) | |
| Unknown | 4 (1.2) | 1 (0.3) | |
| History of hypertensionc | |||
| Nod | 216 (66.7) | 183 (56.5) | .008 |
| Yes | 108 (33.3) | 141 (43.5) | |
| Smoking statusc | |||
| Never | 155 (47.8) | 143 (44.1) | .54 |
| Former | 134 (41.4) | 148 (45.7) | |
| Current | 35 (10.8) | 33 (10.2) | |
| Calendar yeare | |||
| 1993-1995 | 84 (25.9) | 88 (27.2) | .67 |
| 1996-1997 | 116 (35.8) | 123 (38.0) | |
| 1998-2002 | 124 (38.3) | 113 (34.9) | |
| eGFR,e mL/min/1.73 m2 | |||
| 90+ | 109 (33.6) | 106 (32.7) | .25 |
| <90-60 | 197 (60.8) | 189 (58.3) | |
| <60 | 18 (5.6) | 29 (9.0) | |
a
Groups may not sum to 100% due to rounding. eGFR = estimated glomerular filtration rate; PLCO = Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial.
b
χ2 test, except for body mass index (Fisher’s exact test). Not reported for matching factors (age, center, sex, and race).
c
Self-reported at study baseline.
d
Includes 1 case with missing information for history of hypertension.
e
At blood draw.