Retreatment ratings by reader
| Individual Readers | Decision to Retreat | Mean Rating (SD) | Clinically Meaningful Difference Cases | P Value (CMD Cases) | P Value (Grade 5) | P Value (Grade 1) | Total | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1) Definitely Do Not Retreat | 2 | 3 | 4 | 5) Definitely Retreat | |||||||
| Reader 1: neuroradiologist, <5 years | 11 | 15 | 12 | 13 | 15 | 3.1 (1.4) | 66 | ||||
| Reader 2: neuroradiologist, 5–10 years | 20 | 17 | 1 | 12 | 16 | 2.8 (1.6) | 66 | ||||
| Reader 3: neuroradiologist, ≥10 years | 21 | 9 | 2 | 13 | 21 | 3.1 (1.7) | 66 | ||||
| Reader 4: neuroradiologist, ≥10 years | 9 | 9 | 0 | 11 | 37 | 3.9 (1.5) | 66 | ||||
| Reader 5: neurosurgeon, <5 years | 6 | 4 | 6 | 10 | 40 | 4.1 (1.3) | 66 | ||||
| Reader 6: neurosurgeon, <5 years | 10 | 9 | 2 | 15 | 30 | 3.7 (1.5) | 66 | ||||
| Reader 7: neurosurgeon, ≥10 years | 5 | 14 | 1 | 21 | 25 | 3.7 (1.4) | 66 | ||||
| Only neuroradiologists | 61 (23%) | 50 (19%) | 15 (6%) | 49 (19%) | 89 (34%) | 3.2 (1.6) | 31 (47%) | .0007 | <.0001 | <.0001 | 264 |
| Only neurosurgeons | 21 (11%) | 27 (14%) | 9 (5%) | 46 (23%) | 95 (48%) | 3.8 (1.4) | 12 (18%) | 198 | |||
| Only <5 years' experience | 27 (14%) | 28 (14%) | 20 (10%) | 38 (19%) | 85 (43%) | 3.6 (1.5) | 17 (26%) | .71a | .0198b | .0090b | 198 |
| Only 5–10 years' experience | 20 (30%) | 17 (26%) | 1 (2%) | 12 (18%) | 16 (24%) | 2.8 (1.6) | – | .92a | .33a | 66 | |
| Only ≥10 years' experience | 35 (18%) | 32 (16%) | 3 (2%) | 45 (23%) | 80 (40%) | 3.5 (1.6) | 20 (30%) | 198 | |||
| All readers total | 82 (18%) | 77 (17%) | 24 (5%) | 95 (21%) | 184 (40%) | 3.5 (1.6) | 40 (61%) | 462 | |||