Table 1.
Means, standard deviations and group comparisons for demographic characteristics and performance on neuropsychological tests.
| All Participants | Vocabulary Matched | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Older (n = 35) |
Younger (n = 56) |
Older (n = 18) |
Younger (n = 18) |
|||||||
| Participant Characteristics | M | SD | M | SD | P | M | SD | M | SD | p |
| Age | 72.3 | 3.2 | 20.4 | 2.5 | <.001 | 71.6 | 2.9 | 21.1 | 3.3 | <.001 |
| Years of Education | 17.5 | 2.4 | 13.9 | 1.4 | <.001 | 17.3 | 1.8 | 14.2 | 1.5 | <.001 |
| Current % English use | 99.8 | 0.9 | 99.5 | 1.6 | .395 | 99.6 | 1.2 | 99.7 | 1.2 | .785 |
| % English use during childhood | 99.4 | 2.0 | 98.4 | 3.4 | .097 | 99.2 | 2.6 | 98.3 | 3.3 | .402 |
| Dementia Rating Scale (DRS)a | 140.4 | 2.4 | -- | -- | -- | 139.8 | 2.3 | -- | -- | -- |
| Mini Mental Status Exam (MMSE)a | 29.1 | 1.1 | -- | -- | -- | 28.9 | 1.1 | -- | -- | -- |
| ANARTb | 12.3 | 7.2 | 18.9 | 4.1 | <.001 | 15.9 | 7.8 | 16.7 | 3.6 | .703 |
| Shipley Vocabulary | 36.4 | 2.4 | 31.5 | 2.9 | <.001 | 34.7 | 1.9 | 34.5 | 1.4 | .766 |
| English Multilingual Naming Testc | 67.1 | 1.2 | 64.6 | 2.3 | <.001 | 66.4 | 1.4 | 65.7 | 2.2 | .208 |
a
Younger participants did not complete these tests. Older participants completed the tests as part of their annual neuropsychological evaluation at the ADRC.
b
Number of errors produced during standardized measure of single word reading aloud.
c
Maximum possible picture-naming test score is 68.