TABLE 2.
Participant Demographics and NAB Test Performance
| Non-AD Group Mean (SD) |
AD Group Mean (SD) |
Effect Size d |
Significance Test |
||
|---|---|---|---|---|---|
| t | P | ||||
| Age | 74.4 (8.0) | 77.4 (8.5) | 0.4 | −2.6* | .012 |
| Education | 15.3 (2.9) | 14.9 (3.1) | −0.1 | 1.0 | .327 |
| Driving Scenesa | 38.3 (8.0) | 25.9 (8.5) | −1.5 | 9.5** | <.001 |
| Bill Paymentb | 17.3 (2.2) | 13.7 (4.0) | −1.1 | 5.6** | <.001 |
| Daily Living | 40.4 (5.6) | 25.6 (7.4) | −2.3 | 10.3** | <.001 |
| Memory– | |||||
| Immediate Recallc | |||||
| Daily Living | 12.2 (3.5) | 2.3 (3.5) | −2.8 | 14.0** | <.001 |
| Memory– | |||||
| Delayed Recallc | |||||
| Screening Visual | 4.8 (1.1) | 3.7 (1.4) | −0.9 | 5.6** | <.001 |
| Discriminationd | |||||
| Screening Design | 6.7 (4.1) | 4.0 (3.5) | −0.7 | 4.8** | <.001 |
| Constructione | |||||
| Judgmentf | 15.0 (2.5) | 11.6 (4.4) | −1.0 | 5.6** | <.001 |
AD = Alzheimer’s disease; d = Cohen’s d.
a
Non-AD group, n = 202; AD Group, n = 51.
b
Non-AD group, n = 197; AD Group, n = 42.
c
Non-AD group, n = 163; AD Group, n = 29.
d
Non-AD group, n = 208; AD Group, n = 58.
e
Non-AD group, n = 203; AD Group, n = 55.
f
Non-AD group, n = 185; AD Group, n = 54.
*
p<.05.
**
p<.01.