Benefit from the Chin-Down Maneuver in the Swallowing Performance and Self-Perception of Parkinson’s Disease Patients

Table 2

Correlation between the periods before and after clinical evaluation of swallowing.

Groups	Solid			Liquid
	Pre	Post		Pre	Post
	Mean (PD)	Mean (PD)		Mean (PD)	Mean (PD)
Experimental (EG)	4.56 (±0.631)	2.40 (±0.290)	0.002	3.33 (±0.609)	1.56 (±0.388)	0.01
Control (CG)	4.88 (±1.007)	3.00 (±0.354)	0.083	2.13 (±0.874)	1.13 (±0.482)	0.26
Orientation (OG)	2.67 (±0.304)	3.17 (±0.495)	0.33	0.50 (±0.312)	0.83 (±0.281)	0.39

Student’s -test; PD: standard deviation; : value; .