Knowledge of hereditary breast, ovarian, and colorectal cancers: Respondents’ answers to multiple-choice questions, baseline questionnaire (Q1) versus follow-up questionnaire (Q3).
| QUESTIONS* | Q1 N = 21 N (%) | Q3 N = 20† N (%) | P VALUE (MCNEMAR TEST) |
|---|---|---|---|
| “Suppose you had a patient whose aunt or grandmother on her father’s side carries the BRCA1 gene mutation for breast/ ovarian cancer syndrome. In your opinion, could your patient also be a carrier of this mutation?” | |||
| •Yes ‡ | 15 (71) | (90) 18 | .219 |
| •No | 2 (10) | 1 (5) | |
| •Not sure | 4 (19) | 1 (5) | |
| “In your opinion, what percentage of female breast cancer patients has a BRCA1 or BRCA2 gene mutation?” | |||
| •< 100%‡ | 19 (90) | 18 (90) | > .99 |
| •> 10%–100% | 0 | 1 (5) | |
| •Not sure | 2 (10) | 1 (5) | |
| “In your opinion, what percentage of patients who carry a gene for hereditary non-polyposis colorectal cancer will actually go on to develop colorectal cancer?” | |||
| •< 50% | 9 (43) | 7 (35) | .031§ |
| •≥ 50%‡ | 5 (24) | 10 (50) | |
| •Not sure | 7 (33) | 3 (15) | |