Table 3. Distribution of 1294 cases of prostate cancer and 1451 controls, OR and corresponding 95% CI, according to body-size measures during lifetime. Italy, 1991–2002.
| Cases | Controls | OR | (95% CI) | |
|---|---|---|---|---|
| Perceived body size at age 12 | ||||
| Thinner | 521 | 575 | 1 | |
| Same | 492 | 549 | 1.00 | (0.84–1.20) |
| Heavier | 265 | 315 | 0.95 | (0.77–1.17) |
| χ2 trend | 0.18 | P=0.67 | ||
| BMI at age 30 (kg m−2) | ||||
| <22.65 | 406 | 492 | 1 | |
| 22.65 to <24.69 | 437 | 430 | 1.33 | (1.09–1.62) |
| ⩾24.69 | 414 | 459 | 1.22 | (1.01–1.48) |
| χ2 trend | 4.04 | P=0.04 | ||
| Lowest BMI (kg m−2) | ||||
| <21.22 | 420 | 490 | 1 | |
| 21.22 to <23.14 | 402 | 468 | 1.08 | (0.89–1.31) |
| ⩾23.14 | 447 | 443 | 1.32 | (1.08–1.60) |
| χ2 trend | 7.70 | P<0.01 | ||
| Increase of BMI from lowest (kg m−2)c | ||||
| <3.15 | 412 | 412 | 1 | |
| 3.15 to <5.67 | 399 | 402 | 0.98 | (0.80–1.20) |
| ⩾5.67 | 359 | 442 | 0.82 | (0.67–1.01) |
| χ2 trend | 3.54 | P=0.06 | ||
c
Subject with lowest BMI reported less than 5 years before diagnosis/interview were excluded.
a
Estimates from multiple logistic regression equations, including terms for age (quinquennia), study centre, education, physical activity and family history of prostate cancer.
b
The sum may not add up to the total because of some missing values.