Table 3.

Summary of linear regression models for associations with function

	N	R2adj	Model significance	IPAQ sig	PAM sig
Demographics (reduced model including disease duration and years of education)	85	0.11	F(2,82) = 6.09, p = 0.003	–	–
Demographics + Disease severity	85	0.37	F(5,79) = 10.82, p < 0.001	–	–
Demographics + disease severity + health behaviors	85	0.51	F(7,77) = 13.37, p < 0.001	p < 0.001	P = 0.04
Demographics + disease severity + health behaviors + interactions	85	0.5	F(13,71) = 7.36, p < 0.001	p < 0.001	p = 0.03
Final model (including MDS-UPDRS, PAM and IPAQ)	87	0.51	F(3,83) = 31.23, p < 0.001	p < 0.001	P = 0.02

PAM, Patient Activation Measure; IPAQ, International Physical Activity Questionnaire; MDS-UPDRS, Movement Disorders Society Unified Parkinson’s disease rating scale

Disease severity was assessed using NMSQ, LEDD, and MDS-UPDRS, and health behaviors were measured using IPAQ total score and PAM score