Table 4. Missing data for each test.
| Test and area of cognition tested | Completeda | Reasons for missing dataa | |||||
|---|---|---|---|---|---|---|---|
| Fatigue | Hearing | Vision | Refused | Out of timeb | Otherc | ||
| Global cognition | |||||||
| Modified Mini-Mental | 86.1 | 0.3 | 0.6 | 8.8 | 1.5 | 0 | 2.7 |
| Language | |||||||
| Boston Naming Test | 72.5 | 7.2 | 0.3 | 8.2 | 3.6 | 7.5 | 0.7 |
| Animal Fluency | 98.8 | 0.3 | 0 | 0 | 0.3 | 0 | 0.6 |
| Letter F Fluency | 77.5 | 9.0 | 0 | 0 | 4.5 | 8.1 | 0.9 |
| Recent memory | |||||||
| California Verbal Learning Test | 80.2 | 6.1 | 1.0 | 0 | 3.8 | 9.0 | 0 |
| Executive function | |||||||
| Trail Making Test A | 63.3 | 8.0 | 0.3 | 10.2 | 4.6 | 10.5 | 3.1 |
| Trail Making Test B | 59.9 | 8.3 | 0.3 | 10.8 | 6.8 | 10.5 | 3.4 |
| Psychomotor speed | |||||||
| Trail Making Test C | 57.5 | 9.8 | 0.3 | 10.5 | 7.2 | 12.8 | 2.0 |
| Visual-spatial | |||||||
| Clock Drawing | 79.0 | 4.8 | 0 | 7.2 | 3.0 | 4.2 | 1.8 |
| CERAD Constructions | 67.4 | 7.7 | 0 | 6.5 | 4.3 | 11.4 | 2.8 |
| Attention/working memory | |||||||
| Digit Span | 47.7 | 17.1 | 3.1 | 0 | 5.7 | 22.8 | 3.6 |
Note. CERAD=Consortium to Establish a Registry for Alzheimer's disease.
a
Percentage of participants.
b
“Out of time” refers to running out of time for the entire neurological/neuropsychological assessment, not the specific test.
c
“Other” includes reasons such as equipment error, tester error, and other physical impairments such as tremors.