Table 7

Scale scores grouped by H&Y stages (“known groups” comparisons)

	H&Y*			ANOVA	Post-hoc t tests*			Ordinal regression
	2	3	4	ANOVA	2–3	3–4	2–4	Trend†	Fit‡	R-sq§
*p Values of differences in scores of patients in different H&Y stages; †a significant trend indicates that the trend differs significant from zero—that is, no trend; ‡goodness of fit: p>0.05 indicates that the model does not differ significantly from a model with a good fit; §R-sq: proportion of the variance accounted for by the model.
ADL, activities of daily living; ANOVA, analysis of variance; ME, motor examination; MI, motor impairment; UPDRS, Unified Parkinson’s Disease Rating Scale.
SPES/SCOPA MI	11.1	13.4	18.7	<0.001	0.11	<0.001	<0.001	<0.001	0.57	0.26
UPDRS ME	27.7	31.0	43.1	<0.001	0.51	<0.001	<0.001	<0.001	0.78	0.25
SPES/SCOPA ADL	7.2	7.9	11.8	<0.001	0.84	<0.001	<0.001	<0.001	0.33	0.30
UPDRS ADL	13.4	15.0	21.6	<0.001	0.72	<0.001	<0.001	<0.001	0.44	0.26