Table 2 Characteristics of groups in the three cluster solution.
| Young onset group | Older onset group | Older onset group with cognitive impairment and rapid progression | ANOVA | ||
|---|---|---|---|---|---|
| F value | p Value | ||||
| Mean onset (years) | 51.7 | 64.8 | 73.5 | 24.59 | <0.0001 |
| Mean Hoehn and Yahr score | 2.6 | 2.3 | 2.4 | 0.89 | NS |
| Mean disease progression (Hoehn and Yahr score per year) | 0.33 | 0.54 | 1.18 | 6.74 | <0.01 |
| Mean levodopa dose (mg/d) | 870 | 428.6 | 134.8 | 150.50 | <0.0001 |
| Mean mini‐mental state examination score | 28.3 | 27.4 | 23.6 | 6.78 | <0.01 |
| Mean Beck depression score | 17.3 | 9.3 | 13.4 | 3.33 | <0.05 |
ANOVA, analysis of variance.