|
Description of cancer cases and controls and their potential as risk factors for colon cancer. |
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| No. cases1 |
No. controls1 |
Adj. OR (95% CI) |
||
|
|
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| Age (continuous) |
per year |
354 |
1422 |
1.64 (1.52–1.77) |
| Age |
< 50 years |
47 |
249 |
referent |
| 50+ years |
307 |
1173 |
4.38 (1.41–13.62) |
|
| Education |
Lower education |
279 |
1014 |
referent |
| University level |
64 |
394 |
0.64 (0.45–0.91) |
|
| Age at menarche (cont) |
per year |
344 |
1396 |
1.04 (0.95–1.14) |
| Age at menarche |
< 13 years |
148 |
683 |
referent |
| 13+ years |
196 |
713 |
1.16 (0.87–1.55) |
|
| Pregnancy |
Never pregnant |
32 |
104 |
referent |
| Ever pregnant |
318 |
1300 |
0.85 (0.50–1.45) |
|
| Number of children (cont) |
per child |
318 |
1286 |
0.75 (0.64–0.89) |
| Age at first live birth (cont) |
per birth |
316 |
1274 |
1.00 (0.96–1.04) |
| Age at first live birth |
< = 22 years |
140 |
624 |
referent |
| > 22 years |
176 |
650 |
1.15 (0.84–1.57) |
|
| Breast-feeding |
never |
193 |
525 |
referent |
| ever |
157 |
878 |
0.31 (0.23–0.43) |
|
| OC use |
never |
144 |
484 |
referent |
| ever |
210 |
933 |
0.64 (0.46–0.89) |
|
| Family history of colon cancer |
No |
192 |
656 |
referent |
| Yes |
68 |
54 |
3.40 (2.08–5.56) |
|
| BMI (cont) |
348 |
1406 |
0.96 (0.93–0.99) |
|
| Body mass index |
< 25 |
135 |
505 |
referent |
| 25+ |
213 |
901 |
0.91 (0.68–1.23) |
|
|
1 Differences in numbers of cases/controls across variables are due to missing information Conditional logistic regression: Age-adjusted odds ratios (OR) and 95% confidence intervals (CI). | ||||
Dinger et al. BMC Cancer 2007 7:76 doi:10.1186/1471-2407-7-76 |
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