Table 3: Number of imaging tests observed versus number recommended in Canadian guidelines.
| Comparison; variable | Cancer stage | |||
|---|---|---|---|---|
| pT1 | pT2 | pT3 | Total | |
| Aggregate results | ||||
| Chest | ||||
| No. of tests observed | 1194 | 226 | 528 | 1948 |
| No. of tests recommended | 1525 | 418 | 811 | 2754 |
| Ratio of observed to recommended | 0.78 | 0.54 | 0.65 | 0.71 |
| % of tests that were radiography examinations | 67.3 | 51.3 | 32.8 | 56.1 |
| Abdomen | ||||
| No. of tests observed | 2022 | 294 | 670 | 2986 |
| No. of tests recommended | 444 | 122 | 751 | 1317 |
| Ratio of observed to recommended | 4.55 | 2.41 | 0.89 | 2.27 |
| % of tests that were ultrasound examinations | 52.5 | 37.4 | 16.6 | 43.0 |
| Per-patient basis, no. (%) of patients | ||||
| Chest | ||||
| Undertesting | 458 (33.2) | 94 (57.3) | 187 (42.7) | 739 (37.3) |
| Compliant | 635 (46.0) | 52 (31.7) | 63 (37.2) | 850 (42.9) |
| Overtesting | 287 (20.8) | 18 (11.0) | 88 (20.1) | 393 (19.8) |
| Abdomen | ||||
| Undertesting | 32 (2.3) | 10 (6.1) | 140 (32.0) | 182 (9.2) |
| Compliant | 470 (34.1) | 58 (35.4) | 176 (40.2) | 704 (35.5) |
| Overtesting | 878 (63.6) | 96 (58.5) | 122 (27.8) | 1096 (55.3) |