Table 1.
Descriptive statistics for middle-aged, unimpaired-older, and impaired-older adults. A one-way ANOVA indicated that there were no group differences in sex, education, or IQ. There was a group difference on IGT (post-hoc analysis showed a difference between impaired-older adults compared to both unimpaired-older adults and middle-aged adults). There was a group difference in Age such that middle-aged adults were significantly younger than either group of older adults.
| Group | Age (SD) | % Female | Education (SD) |
IQ (SD) | IGT Score (SD) |
|---|---|---|---|---|---|
|
Middle-
Aged |
39.2 (8.95) |
62% | 16.1 (1.89) |
115.5 (111.08) |
50.6 (21.38) |
|
Unimpaired-
Older |
77.6 (8.10) |
45% | 16.5 (3.17) |
121.6 (6.74) |
43.95 (18.47) |
|
Impaired-
Older |
80.5 (7.04) |
60% | 15.4 (2.95) |
115.0 (10.32) |
−36.4 (14.19) |