Table 4.
Multivariable analysis of factors associated with contralateral prophylactic mastectomy
| Odds Ratio | 95% Confidence Interval | p value | |
|---|---|---|---|
| Mutation-likelihood | |||
| Low | Reference | - | - |
| Moderate | 1.47 | 0.96 – 2.42 | 0.078 |
| High | 1.46 | 0.92 – 2.32 | 0.111 |
| Genetic testing | |||
| Not tested | Reference | - | - |
| Positive test | 2.79 | 1.70-4.56 | <0.001 |
| Negative test | 1.56 | 1.17-2.06 | 0.002 |
| Highest level of education | |||
| Less than college | Reference category | - | - |
| College | 0.71 | 0.52 – 0.98 | 0.035 |
| More than college | 0.78 | 0.58 – 1.05 | 0.097 |
| White race | 2.15 | 0.94 – 4.91 | 0.069 |
| Younger agea | 1.04 | 1.03– 1.06 | <0.001 |
Age was included in the model as a continuous variable. Odds ratio represents higher odds of contralateral prophylactic mastectomy for those of younger age at diagnosis.