Table 1.
Study Population and Participant Demographics
| Variables | Controls n (%)* | Cases n (%)* | Total population n (%)* |
|---|---|---|---|
| Study | |||
| Cancer Prevention Study-II Nutritional Cohort (CPS-II) | 24 (8.11) | 24 (8.11) | 48 (8.11) |
| Carotene and Retinol Efficacy Trial (CARET) | 51 (17.23) | 51 (17.23) | 102 (17.23) |
| European Prospective Investigation into Cancer and Nutrition (EPIC) | 72 (24.32) | 72 (24.32) | 144 (24.32) |
| Multiethnic Cohort Study (MEC) | 22 (7.43) | 22 (7.43) | 44 (7.43) |
| Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO) | 63 (21.28) | 63 (21.28) | 126 (21.28) |
| Prostate Cancer Prevention Trial (PCPT) | 26 (8.78) | 26 (8.78) | 52 (8.78) |
| Women’s Health Initiative (WHI) | 38 (12.84) | 38 (12.84) | 76 (12.84) |
| Number of participants | 296 (100.00) | 296 (100.00) | 592 (100.00) |
| Male | 228 (77.03) | 228 (77.03) | 456 (77.03) |
| Female | 68 (22.97) | 68 (22.97) | 136 (22.97) |
| Mean age at blood draw (SD) | 63.4 (7.7) | 63.4 (7.8) | 63.4 (7.8) |
| Race | |||
| White/Assumed White | 271 (91.55) | 273 (92.23) | 544 (91.89) |
| Black | 6 (2.03) | 4 (1.35) | 10 (1.69) |
| Asian or Pacific Islander | 9 (3.04) | 9 (3.04) | 18 (3.04) |
| Missing/Other | 10 (3.38) | 10 (3.38) | 20 (3.38) |
| Ethnicity | |||
| Non-Hispanic | 234 (79.05) | 234 (79.05) | 468 (79.05) |
| Hispanic | 8 (2.70) | 8 (2.70) | 16 (2.70) |
| Unclear/Missing | 54 (18.24) | 54 (18.24) | 108 (18.24) |
| Education | |||
| Less than High School | 42 (14.19) | 58 (19.59) | 100 (16.89) |
| High School Graduate | 46 (15.54) | 49 (16.55) | 95 (16.05) |
| Post High School/Vocational | 37 (12.50) | 39 (13.18) | 76 (12.84) |
| Some College | 55 (18.58) | 66 (22.30) | 121 (20.44) |
| College Graduate | 46 (15.54) | 52 (17.57) | 98 (16.55) |
| Post College Degree | 56 (18.92) | 17 (5.74) | 73 (12.33) |
| Unknown | 14 (4.73) | 15 (5.07) | 29 (4.90) |
| Marital status | |||
| Single | 7 (2.36) | 14 (4.73) | 21 (3.55) |
| Married/Living together | 231 (78.04) | 228 (77.03) | 459 (77.53) |
| Divorced/Seperated | 24 (8.11) | 21 (7.09) | 45 (7.60) |
| Widowed | 19 (6.42) | 21 (7.09) | 40 (6.76) |
| Other/Unknown | 15 (5.07) | 12 (4.05) | 27 (4.56) |
| Smoking status | |||
| Never | 110 (37.16) | 55 (18.58) | 165 (27.87) |
| Former | 119 (40.20) | 169 (57.09) | 288 (48.65) |
| Current | 58 (19.59) | 64 (21.62) | 122 (20.61) |
| Unknown | 9 (3.04) | 8 (2.7) | 17 (2.87) |
| Mean cigarettes per day (SD) | 6.49 (12.21) | 5.54 (11.14) | 5.95 (11.61) |
| Mean BMI at blood draw (kg/m2) (SD) | 27.2 (4.0) | 28.7 (4.6) | 28.0 (4.4) |
| Mean waist circumference at blood draw (cm) (SD) | 93.5 (11.4) | 97.1 (11.8) | 95.3 (11.8) |
*
Unless otherwise indicated all values will be reported as n (%)