Table 3.

Correlation (Spearman’s Rho) between the magnitude of adaptive change of two stepping conditions (Med Off) and different baseline variables within the PD group.

Variable	Magnitude of change	Spearman’s rank correlation	Age	DD	UPDRS (OFF)	H&Y	Mini-BESTest	LEDD
ML size of APA	Cu – SI	Rho	−0.053	−0.233	−0.157	−0.063	0.131	−0.183
		p-value	0.831	0.336	0.52	0.799	0.593	0.454
	Comp – Cu	Rho	0.046	0.209	0.614	0.313	−0.344	0.172
		p-value	0.853	0.391	0.005**	0.192	0.15	0.481
	Comp – SI	Rho	0.002	−0.009	0.386	0.188	−0.162	−0.039
		p-value	0.994	0.972	0.103	0.441	0.507	0.875
Step length	Cu – SI	Rho	−0.147	−0.109	−0.191	0.219	0.3	−0.024
		p-value	0.547	0.658	0.434	0.367	0.212	0.923
	Comp – Cu	Rho	0.265	0.375	0.326	0.47	−0.524	−0.533
		p-value	0.273	0.113	0.173	0.042*	0.021*	0.019*
	Comp – SI	Rho	0.161	0.261	0.354	0.532	−0.467	−0.43
		p-value	0.509	0.28	0.137	0.019*	0.043*	0.066
Step velocity	Cu – SI	Rho	0	−0.077	0.193	0.157	−0.329	0.057
		p-value	1	0.753	0.43	0.522	0.17	0.816
	Comp – Cu	Rho	0.025	−0.004	−0.158	0.282	0.113	−0.577
		p-value	0.92	0.989	0.518	0.242	0.644	0.01*
	Comp – SI	Rho	−0.023	−0.021	0.084	0.376	−0.194	−0.408
		p-value	0.926	0.932	0.731	0.113	0.426	0.083
Step duration	Cu – SI	Rho	−0.116	−0.056	−0.302	0.125	0.471	0.048
		p-value	0.637	0.819	0.208	0.609	0.042*	0.846
	Comp – Cu	Rho	0.402	0.263	0.304	0.407	−0.673	−0.34
		p-value	0.088	0.276	0.205	0.084	0.002**	0.155
	Comp – SI	Rho	0.3	0.288	0.108	0.47	−0.333	−0.483
		p-value	0.212	0.232	0.659	0.042*	0.164	0.036*

Note. Comp, compensatory; Cu, cued; DD, disease duration; SI, self-initiated;

^*significant correlation (p<0.05);

^**significant correlation (p<0.01).