Table 1.
Demographic Factors by Prostate Cancer Status and Multivitamin Use at Baseline
| Prostate Cancer | Recency of Multivitamin Use at Baseline | Cumulative years of Multivitamin Use at Baseline | ||||||
|---|---|---|---|---|---|---|---|---|
|
|
|
|
||||||
| No N=33,030 | Yes N=1,857 | Never N=17,719 | Former N=2,821 | Current N=14,347 | None N=17,719 | <5 years N=5,502 | ≥5 years N=11,666 | |
|
| ||||||||
| Age, years | ||||||||
| < 60 | 12104 (36.6%) | 550 (29.6%) | 6678 (37.7%) | 1149 (40.7%) | 4827 (33.6%) | 6678 (37.7%) | 2078 (37.8%) | 3898 (33.4%) |
| 60 – 64 | 8632 (26.1%) | 542 (29.2%) | 4682 (26.4%) | 677 (24.0%) | 3815 (26.6%) | 4682 (26.4%) | 1423 (25.9%) | 3069 (26.3%) |
| 65 – 69 | 6416 (19.4%) | 443 (23.9%) | 3426 (19.3%) | 539 (19.1%) | 2894 (20.2%) | 3426 (19.3%) | 1069 (19.4%) | 2364 (20.3%) |
| >= 70 | 5878 (17.8%) | 322 (17.3%) | 2933 (16.6%) | 456 (16.2%) | 2811 (19.6%) | 2933 (16.6%) | 932 (16.9%) | 2335 (20.0%) |
| Education | ||||||||
| ≤ High school | 7283 (22.0%) | 399 (21.5%) | 4575 (25.8%) | 626 (22.2%) | 2481 (17.3%) | 4575 (25.8%) | 1210 (22.0%) | 1897 (16.3%) |
| Some college | 8895 (26.9%) | 460 (24.8%) | 4684 (26.4%) | 801 (28.4%) | 3870 (27.0%) | 4684 (26.4%) | 1523 (27.7%) | 3148 (27.0%) |
| ≥ College graduate | 16531 (50.0%) | 984 (53.0%) | 8242 (46.5%) | 1369 (48.5%) | 7904 (55.1%) | 8242 (46.5%) | 2722 (49.5%) | 6551 (56.2%) |
| Unknown | 321 (1.0%) | 14 (0.8%) | 218 (1.2%) | 25 (0.9%) | 92 (0.6%) | 218 (1.2%) | 47 (0.9%) | 70 (0.6%) |
| Marital Status | ||||||||
| Current | 26883 (81.4%) | 1547 (83.3%) | 14478 (81.7%) | 2218 (78.6%) | 11734 (81.8%) | 14478 (81.7%) | 4462 (81.1%) | 9490 (81.3%) |
| Former | 4723 (14.3%) | 246 (13.2%) | 2468 (13.9%) | 463 (16.4%) | 2038 (14.2%) | 2468 (13.9%) | 820 (14.9%) | 1681 (14.4%) |
| Never | 1248 (3.8%) | 55 (3.0%) | 633 (3.6%) | 129 (4.6%) | 541 (3.8%) | 633 (3.6%) | 204 (3.7%) | 466 (4.0%) |
| Unknown | 176 (0.5%) | 9 (0.5%) | 140 (0.8%) | 11 (0.4%) | 34 (0.2%) | 140 (0.8%) | 16 (0.3%) | 29 (0.2%) |
| Family history of Prostate cancer | ||||||||
| Yes | 5335 (16.2%) | 529 (28.5%) | 3024 (17.1%) | 471 (16.7%) | 2369 (16.5%) | 3024 (17.1%) | 891 (16.2%) | 1949 (16.7%) |
| Race | ||||||||
| Non-Hispanic White | 26097 (79.0%) | 1474 (79.4%) | 13554 (76.5%) | 2087 (74.0%) | 11930 (83.2%) | 13554 (76.5%) | 4151 (75.4%) | 9866 (84.6%) |
| Non-Hispanic Black | 4018 (12.2%) | 268 (14.4%) | 2433 (13.7%) | 409 (14.5%) | 1444 (10.1%) | 2433 (13.7%) | 796 (14.5%) | 1057 (9.1%) |
| Other | 2915 (8.8%) | 115 (6.2%) | 1732 (9.8%) | 325 (11.5%) | 973 (6.7%) | 1732 (9.8%) | 555 (10.1%) | 743 (6.3%) |
| Cigarette smoking | ||||||||
| Current | 2575 (7.8%) | 107 (5.8%) | 1548 (8.7%) | 215 (7.6%) | 919 (6.4%) | 1548 (8.7%) | 391 (7.1%) | 743 (6.4%) |
| Former | 16289 (49.3%) | 868 (46.7%) | 8498 (48.0%) | 1395 (49.5%) | 7264 (50.6%) | 8498 (48.0%) | 2679 (48.7%) | 5980 (51.3%) |
| Never | 14004 (42.4%) | 877 (47.2%) | 7538 (42.5%) | 1203 (42.6%) | 6140 (42.8%) | 7538 (42.5%) | 2417 (43.9%) | 4926 (42.2%) |
| Unknown | 162 (0.5%) | 5 (0.3%) | 135 (0.8%) | 8 (0.3%) | 24 (0.2%) | 135 (0.8%) | 15 (0.3%) | 17 (0.1%) |
| Alcohol consumption, g/d | ||||||||
| 0 – <0.5 (none to < 1 drink/mo) | 11749 (35.6%) | 644 (34.7%) | 6470 (36.6%) | 1079 (38.2%) | 4844 (33.8%) | 6470 (36.6%) | 2114 (38.5%) | 3809 (32.7%) |
| 0.5 – 9.9 (1 drink/mo to <1 drink/day) | 10482 (31.7%) | 592 (31.8%) | 5506 (31.1%) | 882 (31.3%) | 4652 (32.5%) | 5506 (31.1%) | 1705 (31.0%) | 3829 (32.9%) |
| >10 (≥1 drink per day) | 10799 (32.7%) | 621 (33.5%) | 5723 (32.3%) | 860 (30.5%) | 4837 (33.7%) | 5723 (32.3%) | 1679 (30.5%) | 4018 (34.5%) |
| Unknown/missing | 31 (<1%) | 3 (<1%) | 20 (<1%) | 14 (<1%) | 20 (<1%) | 4 (<1%) | 10 (<1%) | |
| Body Mass Index, kg/m2 | ||||||||
| <25 | 6803 (20.6%) | 363 (19.5%) | 3535 (20.0%) | 593 (21.0%) | 3038 (21.2%) | 3535 (20.0%) | 1127 (20.5%) | 2504 (21.5%) |
| 25.0 to 29.9 | 15804 (47.8%) | 947 (51.0%) | 8416 (47.5%) | 1357 (48.1%) | 6978 (48.6%) | 8416 (47.5%) | 2611 (47.5%) | 5724 (49.1%) |
| ≥30.0 | 10423 (31.6%) | 547 (29.5%) | 5768 (32.6%) | 871 (30.9%) | 4331 (30.2%) | 5768 (32.6%) | 1764 (32.1%) | 3438 (29.5%) |
| Diabetes | ||||||||
| Yes | 3492 (10.6%) | 133 (7.2%) | 1949 (11.0%) | 290 (10.3%) | 1386 (9.7%) | 1949 (11.0%) | 584 (10.6%) | 1092 (9.4%) |
| Study Treatment Arm | ||||||||
| Selenium only | 8298 (25.1%) | 454 (24.4%) | 4465 (25.2%) | 730 (25.9%) | 3557 (24.8%) | 4465 (25.2%) | 1397 (25.4%) | 2890 (24.8%) |
| Selenium + Vitamin E | 8248 (25.0%) | 454 (24.4%) | 4335 (24.5%) | 720 (25.5%) | 3647 (25.4%) | 4335 (24.5%) | 1400 (25.4%) | 2967 (25.4%) |
| Placebo | 8253 (25.0%) | 443 (23.9%) | 4440 (25.1%) | 676 (24.0%) | 3580 (25.0%) | 4440 (25.1%) | 1344 (24.4%) | 2912 (25.0%) |
| Vitamin E only | 8231 (24.9%) | 506 (27.2%) | 4479 (25.3%) | 695 (24.6%) | 3563 (24.8%) | 4479 (25.3%) | 1361 (24.7%) | 2897 (24.8%) |