Table 2.
Percent agreement and interrater agreement for diagnostic impressions among all sources and by dementia severity.
| All Sources | Patient n = 82 % (K) |
Companion n = 83 % (K) |
Nurse Form n = 90 % (K) |
Video n = 85 % (K) |
|---|---|---|---|---|
| Physician CDR | 61.0% (0.32) | 81.9% (0.65) | 86.7% (0.74) | 84.7% (0.72) |
| Patient | - | 65.9% (0.40) | 62.2% (0.37) | 64.9% (0.41) |
| Companion | - | - | 81.9% (0.68) | 84.6% (0.73) |
| Nurse Form | - | - | - | 91.8% (0.86) |
| By Dementia Severity | Patient % |
Companion % |
Nurse Form % |
Video % |
|---|---|---|---|---|
| No Dementia (n = 29) | ||||
| Physician CDR | 88.0% | 100.0% | 100.0% | 96.6% |
| Patient | - | 88.0% | 88.0% | 88.0% |
| Companion | - | - | 100.0% | 96.2% |
| Nurse Form | - | - | - | 96.6% |
| Very Mild Dementia (n = 40) | ||||
| Physician CDR | 47.2% | 66.7% | 77.5% | 72.2% |
| Patient | - | 55.5% | 55.5% | 59.4% |
| Companion | - | - | 69.4% | 71.9% |
| Nurse Form | - | - | - | 91.7% |
| Mild Dementia (n = 21) | ||||
| Physician CDR | 52.4% | 85.7% | 85.7% | 90.0% |
| Patient | - | 57.1% | 42.9% | 45.0% |
| Companion | - | - | 81.0% | 90.0% |
| Nurse Form | - | - | - | 85.0% |
Note: All Cohen’s Kappa (K) values significant at p < 0.001.