Performance on the Hopkins Board of patients with Huntington’s disease, Alzheimer’s disease, and Parkinson’s disease, as well as younger (age <65) and older (age ⩾65) normal control subjects. Values are mean (SD), except where noted
| Huntington’s disease | Alzheimer’s disease | Parkinson’s disease | Normal | ||
|---|---|---|---|---|---|
| Young | Old | ||||
| *Testing was discontinued if the subject made six or more errors on two consecutive trials. Six errors (representing chance performance) are recorded for each non-administered trial. | |||||
| N | 110 | 143 | 77 | 57 | 90 |
| Age (years) | 49.44 (12.35) | 73.05 (9.22) | 63.83 (9.93) | 50.04 (10.61) | 72.70 (4.76) |
| Sex (men:women) | 48:62 | 56:87 | 53:24 | 18:39 | 35:55 |
| Education (years) | 14.52 (2.81) | 12.89 (3.94) | 16.51 (3.12) | 15.74 (2.63) | 15.20 (2.87) |
| Duration of illness (years) | 7.68 (5.00) | 3.91 (2.75) | 10.09 (7.36) | N/A | N/A |
| Mini-Mental State Examination (score) | 25.65 (3.15) | 19.11 (5.49) | 27.57 (2.54) | 29.14 (1.00) | 28.40 (1.44) |
| Hopkins Board | |||||
| Naming (range 0–9) | 8.92 (0.31) | 8.30 (1.14) | 8.74 (0.66) | 9.00 (0.00) | 8.89 (0.15) |
| Errors to criterion (range 0–68)* | 16.53 (15.09) | 39.62 (20.88) | 8.78 (10.77) | 2.96 (4.61) | 4.67 (6.34) |
| Trials to criterion (range 2–10) | 7.86 (2.79) | 9.27 (1.85) | 6.10 (3.08) | 3.98 (2.30) | 4.98 (2.86) |
| Delayed item recall (range 0–9) | 7.21 (1.62) | 1.93 (2.50) | 7.30 (1.88) | 8.42 (0.82) | 7.87 (1.21) |
| Delayed location recall (range 0–9) | 6.83 (2.14) | 3.82 (2.92) | 8.18 (1.55) | 8.70 (0.76) | 8.42 (1.08) |