Table 2 Characteristics of the PROtEuS study population, Montreal, Canada, 2005-2011
Characteristics | Cases (N = 1937) | Controls (N = 1995) | ||
|---|---|---|---|---|
n | % | n | % | |
Age at index date | ||||
<65 years | 1009 | 52.1 | 896 | 44.9 |
≥65 years | 928 | 47.9 | 1099 | 55.1 |
Ancestry | ||||
European | 1696 | 87.6 | 1686 | 84.6 |
Sub-Saharan | 130 | 6.7 | 90 | 4.5 |
Asian | 24 | 1.2 | 73 | 3.7 |
Greater Middle East | 45 | 2.3 | 99 | 5.0 |
Other (Hispanics, Autochtones) | 29 | 1.5 | 31 | 1.6 |
Do not know | 12 | 0.3 | 14 | 0.7 |
Last prostate cancer screening (PSA and/or DRE) | ||||
No | 3 | 0.2 | 191 | 9.6 |
≤2 yrs before index date | 1917 | 99.0 | 1511 | 75.7 |
>2 yrs before index date | 1 | 0.1 | 235 | 11.8 |
Do not know | 16 | 0.8 | 58 | 2.9 |
First-degree family history of prostate cancer | ||||
No | 1419 | 73.3 | 1739 | 87.2 |
Yes | 452 | 23.3 | 199 | 10.0 |
Don't know | 66 | 3.4 | 57 | 2.9 |
Annual family income | ||||
<$C10 000–29 999 | 490 | 25.3 | 497 | 25.0 |
$C30 000–79 999 | 874 | 45.1 | 872 | 43.8 |
$C80 000- > $C100 000 | 426 | 22.0 | 428 | 21.5 |
Preferred not to responda | 132 | 6.8 | 186 | 9.3 |
Do not know | 15 | 0.8 | 9 | 0.4 |
Education | ||||
Primary | 449 | 23.2 | 429 | 21.5 |
Secondary/College | 891 | 46.1 | 953 | 47.8 |
University | 592 | 30.6 | 611 | 30.7 |
Physical activityb | ||||
Not very active | 444 | 22.9 | 503 | 25.2 |
Moderately active | 518 | 26.8 | 545 | 27.3 |
Very active | 974 | 50.3 | 946 | 47.4 |
Daily frequency of fruits and vegetables consumptionc | ||||
≤6 | 477 | 24.8 | 498 | 25.0 |
]6-9] | 507 | 26.3 | 497 | 25.0 |
]9-12] | 431 | 22.4 | 497 | 25.0 |
>12 | 511 | 26.5 | 498 | 25.0 |
Smoking (pack-years), mean ± SD | 22.3 | ±27.1 | 23.6 | ±27.3 |
Alcohol intake (drink-years), mean ± SD | 75.2 | ±121.6 | 73.8 | ±136.6 |
Body Mass Index 2 yrs ago (kg/m2), mean ± SD | 26.8 | ±4.0 | 27.2 | ±4.4 |
Waist circumference (cm), mean ± SD | 98.6 | ±13.6 | 98.5 | ±14.3 |
History of dyslipidemiac | 576 | 29.7 | 727 | 36.4 |
Ever use of statin | 337 | 17.4 | 358 | 17.9 |
History of hypertensionc | 732 | 37.9 | 842 | 42.3 |
Type 2 diabetesc | 205 | 10.6 | 348 | 17.4 |
Diagnosed ≥5 years ago | 140 | 7.2 | 246 | 12.3 |
Ever use of Metformin | 102 | 5.3 | 201 | 10.1 |
History of benign prostate hyperplasiac | 510 | 26.3 | 411 | 20.6 |
Ever use of Aspirinc | 308 | 15.9 | 367 | 18.4 |
Ever use of 5α-reductase inhibitorsc | 33 | 1.7 | 46 | 2.3 |