Table 3.
Odds ratios for breast cancer associated with joint effects of diabetes and physical activity, South Texas Women’s Health Project, 2003–2008
| Characteristic | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Did not engage in physical activity | Cases (n=116) | High-risk controls (n=268) | ORa | (95% CI) | Low-risk controls (n=219) | ORa | (95% CI) | |||
| N | % | N | % | n | % | |||||
| History of diabetes | ||||||||||
| No | 69 | 59.5 | 185 | 69.0 | 1.00 | (referent) | 136 | 62.4 | 1.00 | (referent) |
| Yes | 47 | 40.5 | 83 | 31.0 | 0.96 | (0.63–1.48) | 82 | 37.6 | 0.72 | (0.46–1.15) |
| Missing | 0 | 1 | 1 | |||||||
| Did engage in physical activity | Cases (n=74) | High risk-controls (n=243) | ORa | (95% CI) | Low-risk controls (n=249) | |||||
| N | % | N | % | |||||||
| History of diabetes | ||||||||||
| No | 56 | 75.7 | 169 | 69.6 | 1.00 | (referent) | 170 | 68.3 | 1.00 | (referent) |
| Yes | 18 | 24.3 | 74 | 30.4 | 0.40 | (0.21–0.79) | 79 | 31.7 | 0.41 | (0.21–0.83) |
| P-value for interaction | 0.013 | 0.183 | ||||||||
a
Odds ratio (OR) and 95% confidence interval (95% CI) adjusted for menopausal status and mammography screening.