Table 2. Baseline characteristics of prostate cancer cases and controls pooled across five studies.
| Characteristica | Controls (n=3528) | Cases (n=1717) |
|---|---|---|
| Age at diary completion (years) | 62.7 (7.5) | 63.0 (6.5) |
| Height (m)b | 1.75 (0.07) | 1.75 (0.07) |
| Weight (kg)c | 80.7 (11.6) | 80.8 (11.7) |
| Body mass index (kg/m2) | 26.4 (3.3) | 26.3 (3.3) |
| Body mass index, categories, n(% known) | ||
| <22.5 | 334 (9.9) | 171 (10.8) |
| 22.5–24.9 | 822 (24.5) | 428 (27.1) |
| 25.0–27.4 | 1100 (32.7) | 487 (30.8) |
| 27.5–29.9 | 643 (19.1) | 291 (18.4) |
| ⩾30.0 | 462 (13.7) | 203 (12.8) |
| Missing, n (% all) | 167 (4.7) | 137 (8.0) |
| Smoking status, n(% known) | ||
| Never | 1116 (33.1) | 605 (37.7) |
| Former | 1873 (55.5) | 821 (51.2) |
| Current | 383 (11.4) | 177 (11.0) |
| Missing, n (% all) | 156 (4.4) | 114 (6.6) |
| Marital status, n (% known) | ||
| Married or cohabiting | 3030 (86.4) | 1500 (88.0) |
| Unmarried | 478 (13.6) | 205 (12.0) |
| Missing, n (% all) | 20 (0.6) | 12 (0.7) |
| Diabetes, n (% known) | ||
| No diabetes | 3121 (94.4) | 1462 (95.1) |
| Diabetes (self-reported) | 185 (5.6) | 76 (4.9) |
| Missing, n (% all) | 222 (6.3) | 179 (10.4) |
| Townsend material deprivation score, n (% known) | ||
| Low (richest) | 817 (24.6) | 403 (25.5) |
| Medium-low | 864 (26.0) | 370 (23.4) |
| Medium-high | 837 (25.2) | 383 (24.3) |
| High (poorest) | 802 (24.2) | 422 (26.7) |
| Missing, n (% all) | 208 (5.9) | 139 (8.1) |
a
Values are unadjusted means (s.d. except where indicated) combined for five studies.
b
Missing for 151 (4.3%) controls, 115 (6.7%) cases.
c
Missing for 157 (4.5%) controls, 131 (7.6%) cases.