| Variable | No. (%)† of women | Mastectomy rate, % | Adjusted‡ odds ratio | 95% CI |
|---|---|---|---|---|
| Travel time, min | ||||
| 0–39 | 24 161 (59) | 40 | 1.0 (ref) | – |
| 40–89 | 7 884 (19) | 46 | 1.3 | (1.2–1.4) |
| 90–179 | 5 131 (13) | 52 | 1.6 | (1.5–1.7) |
| ≥ 180 | 3 699 (9) | 57 | 1.9 | (1.8–2.0) |
| Age, yr | ||||
| 18–49 | 8 708 (21) | 48 | 1.0 (ref) | – |
| 50–59 | 10 165 (25) | 40 | 0.7 | (0.66–0.74) |
| 60–69 | 10 346 (25) | 40 | 0.7 | (0.65–0.73) |
| ≥ 70 | 11 656 (29) | 48 | 1.0 | (0.92–1.03) |
| Neighbourhood income quintile | ||||
| 1 (least affluent) | 6 273 (15) | 49 | 1.3 | (1.2–1.4) |
| 2 | 7 620 (19) | 47 | 1.2 | (1.1–1.3) |
| 3 | 8 216 (20) | 45 | 1.1 | (1.1–1.2) |
| 4 | 8 912 (22) | 43 | 1.1 | (1.0–1.20) |
| 5 (most affluent) | 9 854 (24) | 39 | 1.0 (ref) | – |
Note: CI = confidence interval. *Quebec, Yukon, Northwest Territories and Nunavut were not included in this analysis. †Women for whom age, neighbourhood income quintile or travel time could not be calculated (n = 972) were excluded. ‡Adjusted for age, neighbourhood income quintile and travel time.