Clinical and functional correlates of parkinsonism in a population-based sample of individuals aged 75 + : the Pietà study

Table 5 Hierarchical linear regression models in the whole sample

Model	R	R²	R² adjusted	R² change	F
1	0.782	0.612	0.607	0.612	120.104
2	0.794	0.631	0.625	0.019	19.854
3	0.795	0.632	0.625	0.001	0.562
4	0.818	0.670	0.663	0.038	43.849

Model 1: presence of dementia, schooling years, picture drawing memory test’s delayed recall score, picture drawing memory test’s recognition score, Mini-Mental State Examination; Model 2 = Model 1 + dysphagia; Model 3 = Model 2 + being in the parkinsonian group; Model 4 = Model 3 + Unified Parkinson’s disease rating scale motor scores

ISSN: 1471-2377