Table 1.
Mean scores for middle-aged, young-old, and old-old participants in IADL reports, Everyday Problems Test (EPT), verbal ability, inductive reasoning, and education.
| Age Group | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Middle-aged | Young-old | Old-old | ||||||||
| Variable | M | SD | range | M | SD | range | M | SD | range | |
| Age | 54.61 | 2.69 | 50–59 | 66.73 | 4.77 | 60–74 | 80.96 | 5.23 | 75–92 | |
| IADL | 21.55 | 3.24 | 12–24 | 22.23 | 2.35 | 15–24 | 21.13 | 2.31 | 14–24 | |
| EPT | 17.68 | 5.07 | 4–25 | 15.43 | 5.28 | 7–25 | 13.08 | 5.12 | 1–23 | |
| Verbal ability | 14.61 | 5.01 | 5–26 | 16.20 | 4.53 | 7–26 | 13.33 | 4.97 | 5–23 | |
| Inductive reasoning | 10.76 | 3.81 | 3–20 | 8.58 | 4.21 | 3–18 | 6.58 | 3.28 | 3–15 | |
| Education | 13.71 | 2.72 | 7–18 | 13.02 | 2.97 | 4–22 | 11.40 | 3.49 | 6–19 | |
| EPT domains | ||||||||||
| Telephone | 2.58 | 0.83 | 1–4 | 2.56 | 0.98 | 1–4 | 2.35 | 0.93 | 0–4 | |
| Shopping | 2.63 | 1.02 | 0–4 | 2.35 | 0.98 | 0–4 | 1.95 | 1.19 | 0–4 | |
| Meal Preparation | 2.39 | 1.00 | 0–4 | 2.20 | 1.14 | 0–4 | 1.75 | 0.97 | 0–3 | |
| Housekeeping | 2.61 | 1.05 | 0–4 | 2.30 | 1.14 | 0–4 | 1.85 | 0.99 | 0–3 | |
| Transportation | 2.39 | 1.00 | 0–4 | 1.90 | 1.13 | 0–4 | 1.45 | 1.19 | 0–4 | |
| Medication | 2.47 | 1.06 | 0–4 | 2.13 | 1.14 | 0–4 | 1.65 | 0.99 | 0–4 | |
| Finances | 2.61 | 1.22 | 0–4 | 1.98 | 1.00 | 0–4 | 1.90 | 1.21 | 0–4 | |
| IADL domains | ||||||||||
| Telephone | 2.84 | 0.44 | 1–3 | 2.98 | 0.16 | 2–3 | 3.00 | 0.00 | 3–3 | |
| Shopping | 2.79 | 0.53 | 1–3 | 2.85 | 0.36 | 2–3 | 2.65 | 0.59 | 1–3 | |
| Meal Preparation | 2.74 | 0.50 | 1–3 | 2.68 | 0.52 | 1–3 | 2.65 | 0.49 | 2–3 | |
| Housekeeping | 2.47 | 0.65 | 1–3 | 2.68 | 0.57 | 1–3 | 2.50 | 0.61 | 1–3 | |
| Transportation | 2.82 | 0.39 | 2–3 | 2.75 | 0.49 | 1–3 | 2.45 | 0.69 | 1–3 | |
| Medication | 2.84 | 0.49 | 1–3 | 2.95 | 0.32 | 1–3 | 2.85 | 0.49 | 1–3 | |
| Finances | 2.71 | 0.61 | 1–3 | 2.83 | 0.50 | 1–3 | 2.70 | 0.73 | 1–3 | |