Screening rates among patients with stage IV (metastatic) colorectal, lung, breast or prostate cancer
| Type of screening | Lung cancer n = 15 948 | Breast cancer n = 1678 | Prostate cancer n = 3366 | All patients n = 20 992 |
|---|---|---|---|---|
| Colorectal screening within 1 yr after diagnosis, % | ||||
| Overall | 2.9 | 6.3 | 13.3 | 4.9 |
| By age, yr | ||||
| 50–74 | 3.3 | 7.9 | 16.0 | 5.5 |
| ≥ 75 | 2.1 | 3.1 | 9.8 | 3.7 |
| By screening modality | ||||
| FOBT | 1.5 | 3.2 | 7.3 | 2.6 |
| Flexible sigmoidoscopy | 0.2 | < 0.4* | 0.5 | 0.2 |
| Colonoscopy | 1.3 | 2.7–3.1* | 5.5 | 2.1 |
| Colorectal screening within 3 yr after diagnosis, % | ||||
| Overall | 4.1 | 12.3 | 27.5 | 8.5 |
| Breast cancer screening (n = 10 034) | ||||
| Rate within 1 yr after diagnosis | ||||
| Overall | 8.7 | 8.0 | – | 8.5 |
| By age, yr | ||||
| 50–74 | 10.9 | 12.4 | – | 11.3 |
| ≥ 75 | 4.4 | 3.0 | – | 3.9 |
| Screening through OBSP | ||||
| OBSP | 2.0 | 3.3 | – | 2.3 |
| Non-OBSP mammogram | 6.7 | 4.6 | – | 6.2 |
| Rate within 3 yr after diagnosis | ||||
| Overall | 10.2 | 13.1 | – | 11.0 |
Note: FOBT = fecal occult blood test, OBSP = Ontario Breast Screening Program.
↵* Small cell sizes were suppressed to preserve patient anonymity.