. Author manuscript; available in PMC: 2020 Jan 1.

Published in final edited form as: J Neurol Phys Ther. 2019 Jan;43(1):26–32. doi: 10.1097/NPT.0000000000000245

Table 2.

Wald Statistics for Generalized Estimating Equation Analysis

Outcome	Effect/Interaction	Chi-Square	Pr > ChiSq
Forward velocity	Time	3.20	0.2018
	Group	2.47	0.2909
	Time × Group	9.15	0.0574
Backward velocity	Time	26.27	< 00.0001^*
	Group	1.50	0.4716
	Time × Group	4.27	0.3703
SMWT	Time	9.81	0.0074^*
	Group	0.98	0.6112
	Time × Group	3.26	0.5158
Mini-BESTest	Time	5.09	0.0783
	Group	0.59	0.7452
	Time × Group	5.26	0.2616
MDS-UPDRS-III	Time	17.45	0.0002^*
	Group	0.90	0.6366
	Time × Group	3.40	0.4926
PDQ-39	Time	11.78	0.0028^*
	Group	4.47	0.1069
	Time × Group	22.76	0.0001^*

Mini-BESTest, Mini-Balance Evaluation Systems Test; MDS-UPDRS-III, Movement Disorders Society Unified Parkinson Disease Rating Scale; PDQ-39, Parkinson Disease Questionnaire-39; SMWT, Six-minute walk test;

p < 0.008