Table 3.

Correlations amongst variables: Control (black, below diagonal); Parkinson’s Disease (red, above diagonal)

	TTC	Hits + Close Calls	ESS	PVT Mean RRT	PVT Lapses	UFOV	Age	Walking Speed
TTC	--	−0.787**	−0.224	0.552**	−0.530**	−0.404**	−0.151	0.684**
Hits + Close Calls	−0.403*	--	0.106	−0.476**	0.540**	0.417**	0.262	−0.596**
ESS	0.026	−0.086	--	−0.493**	0.357*	0.179	0.197	−0.178
PVT Mean RRT	0.443*	−0.212	−0.203	--	−0.630**	−0.378*	−0.085	0.467**
PVT Lapses	−0.207	0.197	−0.129	−0.451*	--	0.546**	0.291	−0.426*
UFOV	−0.315	0.307	−0.388	−0.363	0.225	--	0.341*	−0.266
Age	−0.507**	0.279	−0.290	−0.253	0.183	0.642**	--	−0.058
Walking Speed	0.397	−0.189	−0.017	0.475*	−0.205	−0.408*	−0.437*	--

Values are Pearson correlation coefficients (r)

^**p-value <0.01 (two-tailed)

^*p-value <0.05 (two-tailed)