Table 2. Distribution of 454 endometrial cancer cases and 908 controls, and corresponding odds ratio (OR) with 95% confidence intervals (CIs)a, according to body mass index (BMI) at diagnosis and at different ages,b Italy, 1992–2006.
|
Cases
|
Controls
|
||||
|---|---|---|---|---|---|
| No. | (%) | No. | (%) | OR (95% CI) | |
| Height (cm) | |||||
| <160 | 152 | (33.5) | 258 | (28.5) | 1c |
| 160–164 | 148 | (32.6) | 280 | (31.0) | 0.90 (0.66–1.21) |
| ⩾165 | 154 | (33.9) | 366 | (40.5) | 0.71 (0.53–0.95) |
| χ2 for trend (P-value) | 5.39 (P=0.02) | ||||
| Weight (kg) | |||||
| <64 | 109 | (24.0) | 355 | (39.1) | 1c |
| 64–74 | 145 | (31.9) | 311 | (34.3) | 1.51 (1.10–2.06) |
| ⩾75 | 200 | (44.1) | 242 | (26.7) | 2.71 (1.99–3.70) |
| χ2 for trend (P-value) | 40.17 (P<0.01) | ||||
| Body mass index (kg m −2 ) | |||||
| <20 | 11 | (2.4) | 58 | (6.4) | 0.56 (0.27–1.15) |
| 20 to <25 | 115 | (25.3) | 355 | (39.3) | 1c |
| 25 to <30 | 160 | (35.2) | 351 | (38.8) | 1.41 (1.05–1.90) |
| ⩾30 | 168 | (37.0) | 140 | (15.5) | 4.08 (2.90–5.74) |
| χ2 for trend (P-value) | 67.95 (P<0.01) | ||||
| BMI (kg m−2) 5-Unit increase | 1.89 (1.65–2.17) | ||||
| Perceived body size at age 12 years | |||||
| Thinner than peers | 146 | (32.3) | 351 | (39.1) | 1c |
| Same than peers | 173 | (38.3) | 341 | (38.0) | 1.12 (0.85–1. 94) |
| Heavier than peers | 133 | (29.4) | 206 | (22.9) | 1.45 (1.06–1.98) |
| χ2 trend (P-value) | 5.19 (P=0.02) | ||||
| BMI at age 30 yearsd (kg m−2) | |||||
| <20 | 55 | (12.6) | 179 | (21.9) | 0.57 (0.40–0.83) |
| 20 to <25 | 252 | (57.8) | 473 | (57.8) | 1c |
| 25 to <30 | 100 | (22.9) | 134 | (16.4) | 1.40 (1.02–1.95) |
| ⩾30 | 29 | (6.7) | 33 | (4.0) | 1.78 (1.01–3.14) |
| χ2 for trend (P-value) | 18.95 (P<0.01) | ||||
| BMI at age 50 yearse (kg m−2) | |||||
| <20 | 7 | (1.9) | 54 | (7.7) | 0.39 (0.17–0.91) |
| 20 to <25 | 138 | (37.3) | 339 | (48.3) | 1c |
| 25 to <30 | 129 | (34.9) | 223 | (31.9) | 1.48 (1.08–2.04) |
| ⩾30 | 96 | (26.0) | 84 | (12.0) | 3.37 (2.26–5.04) |
| χ2 for trend (P-value) | 42.33 (P<0.01) | ||||
a
ORs from conditional logistic regression models, conditioned on age and study centre, adjusted for year of interview, education, smoking status, age at menarche, age at menopause, oral contraceptive use, parity, and hormone replacement therapy use.
b
The sum does not add up to the total because of some missing values.
c
Reference category.
d
Women ⩾30 years old only.
e
Women ⩾50 years old only.