TABLE 1.
Selected characteristics of the 29,072 non-metastatic breast cancer episodes among the 27,734 patients surgically treated in Quebec between 1992 and 1998
| Total (%) | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | |
| Women’s age in 1992 | % | % | % | % | % | % | % | |
| 20–34 | 1488 (5.1) | 2.6 | 3.6 | 3.9 | 4.8 | 5.9 | 6.2 | 7.5 |
| 35–49 | 8968 (30.9) | 25.4 | 28.4 | 28.9 | 30.5 | 31.6 | 34.1 | 34.6 |
| 50–64 | 10 092 (34.7) | 33.5 | 33.7 | 34.6 | 34.8 | 35.1 | 34.8 | 36.0 |
| 65–79 | 7364 (25.3) | 31.3 | 28.3 | 27.6 | 25.7 | 24.5 | 22.5 | 20.3 |
| ≥ 80 | 1160 (4.0) | 7.3 | 6.1 | 4.9 | 4.2 | 2.9 | 2.4 | 1.6 |
| Cancer stage | ||||||||
| Benign In situ | 199 (0.7) | 0.6 | 0.8 | 0.9 | 0.7 | 0.6 | 0.5 | 0.8 |
| Localized | 19 336 (66.51) | 66.2 | 67.0 | 66.8 | 65.4 | 66.6 | 66.5 | 67.0 |
| Regional | 7431 (25.6) | 28.4 | 26.8 | 26.7 | 26.4 | 24.8 | 24.1 | 23.1 |
| Unspecified | 2106 (7.2) | 4.8 | 5.3 | 5.7 | 7.5 | 8.1 | 8.8 | 9.1 |
| Surgery in a centre with a radiation therapy service | 8420 (29.0) | 29.9 | 29.5 | 28.2 | 28.3 | 29.8 | 29.0 | 29.1 |
| Highest quartile for median income | 5846 (24.8) | 22.9 | 24.2 | 24.9 | 24.2 | 25.6 | 26.0 | 28.3 |
| Residential distance from a radiation therapy centre | ||||||||
| 0–100 km | 25 960 (89.4) | 88.5 | 89.8 | 89.8 | 88.8 | 89.0 | 89.6 | 89.9 |
| 101–400 km | 2933 (10.1) | 10.9 | 9.8 | 9.6 | 10.6 | 10.4 | 10.0 | 9.7 |
| ≥401 km | 158 (0.5) | 0.5 | 0.4 | 0.7 | 0.7 | 0.6 | 0.5 | 0.5 |