Factor | All women (n = 105,665) | ||
---|---|---|---|
Entire sample (% of total) | Cases (% of total) | Controls (% of total) | |
Socioeconomic status quintiles | |||
First urban quintile (lowest) | 12,499 (11.8%) | 3,612 (13.4%) | 8,887 (11.3%) |
Second urban quintile | 15,686 (14.8%) | 4,364 (16.2%) | 11,322 (14.4%) |
Third urban quintile | 16,523 (15.6%) | 4,432 (16.4%) | 12,091 (15.4%) |
Fourth urban quintile | 19,040 (18.0%) | 5,011 (18.6%) | 14,029 (17.8%) |
Fifth urban quintile (highest) | 23,555 (22.3%) | 5,752 (21.3%) | 17,803 (22.7%) |
Rural | 18,259 (17.3%) | 3,794 (14.1%) | 14,465 (18.4%) |
Missing | 103 (0.1%) | 35 | 68 |
Age at initial scan | |||
50-54 | 28, 090 (26.6%) | 7,710 (28.6%) | 20,380 (25.9%) |
55-59 | 32,413 (30.7%) | 8,001 (29.6%) | 24,412 (31.1%) |
60-64 | 26,663 (25.2%) | 6,501 (24.1%) | 20,162 (25.7%) |
65-69 | 18,499 (17.5%) | 4,788 (17.7%) | 13,711 (17.4%) |
Cumulative Charlson score on index date | |||
0 | 98,885 (93.6%) | 25,135 (93.1%) | 73,750 (93.8%) |
1 | 3,762 (3.6%) | 1,049 (3.9%) | 2,713 (3.5%) |
2 | 2,115 (2.0%) | 548 (2.0%) | 1,567 (2.0%) |
≥3 | 903 (0.9%) | 268 (1.0%) | 635 (0.7%) |
Women by gender of their PCP at index date | |||
F | 41,616 (39.4%) | 10588 (39.2%) | 31028 (39.5%) |
M | 64,049 (60.6%) | 16412 (60.8%) | 47637 (60.5%) |
Women by country of education of physician on index date | |||
Canadian | 82,020 (77.6%) | 20322 (75.3%) | 61,698 (78.5%) |
Anglosphere | 7.639 (7.2%) | 1995 (7.4%) | 5644 (7.2%) |
Other | 16,006 (15.1%) | 4683 (17.3%) | 11323 (14.3%) |
Women by years since graduation of physician at index date | |||
<10 | 5,573 (5.3%) | 1,352 (5.0%) | 4,221 (5.4%) |
10-19 | 21,621 (20.5%) | 5525 (20.5%) | 16,186 (20.6%) |
20-29 | 37,053 (35.1%) | 9,522 (35.3%) | 27,531 (35.0%) |
30-39 | 30,671 (29.0%) | 7,758 (28.7%) | 22,913 (29.2%) |
> = 40 | 10,657 (10.1%) | 2,843 (10.5%) | 7,814 (9.8%) |
Women who still have a PCP at year one after index date | |||
Yes | 104,801 (99.2%) | 26801 (99.3%) | 78000 (99.2%) |
No | 854 (0.8%) | 199 (0.7%) | 655 (0.8%) |
Women whose Postal code has changed from index date to year one | |||
Yes | 6,264 (5.9%) | 2152 (8.0%) | 4112 (5.1%) |
No | 99,401 (94.1%) | 24848 (92.0%) | 74553 (94.9%) |
Baseline and re-exposure mammography facility | |||
OBSP | 63,264 (59.9%) | 8,964 (33.2%) | 54,230 (69.0%) |
Non-OBSP | 42,401 (40.1%) | 18,036 (66.8%) | 24,365 (31.0%) |