Gastrointestinal Dysfunction Impact on Life Quality in a Cohort of Russian Patients with Parkinson’s Disease I-III H&Y Stage

Table 5

Summary results of generalized linear models (received by stepwise including method) of GIT dysfunction, motor disturbances, depression, and anxiety influences on QoL.

Model	R	R^2	Adjusted R^2	SE of the Estimate
0	0.674	0.454	0.448	11.815
1	0.740	0.547	0.536	10.833
2	0.758	0.574	0.558	10.567

Model 0 includes BDI; model 1 contains Model 0 plus GSRS- SI; model 2 includes Model 1 plus UPDRS III; PDQ-39 SI is a dependent variable. R: the square root of R2; R2: variance portion in the dependent variable, which can be predicted using the independent variables; SE: standard error.