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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Brain Imaging Behav. 2018 Feb;12(1):1–12. doi: 10.1007/s11682-016-9656-9

Table 2.

Parkinson’s disease (PD) and non-PD “control” peers demographic, motor, and general cognition characteristics

Measure PD (n=40) Non-PD Peers (n=40) t p-value
Demographics
Age 67.80 ± 5.44, 60/79 68.18 ± 4.64, 62/79 −0.33 0.74
Education 16.28 ± 3.03, 10/20 16.75 ± 2.35, 12/20 −0.78 0.44
Sex (M:F) 32:8 33:7 0.08 0.78
Charlson Comorbidity
Index		 0.30 ±0 .72, 0/4 0.28 ± .61, 0/2 0.12 0.91
UPDRS-III 17.58 ± 10.74, 3/46 2.75 ± 3.36*; 0/15 83.50 <0.001
H&Y 1.64±.76, 1/3 -- -- --
Disease Duration (yrs) 7.50 ± 5.15, 0/26 -- -- --
< 10 years duration 33 of 40; 83% -- -- --
TICV 1745 ± 170 cc 1644 ± 125 cc 3.024 0.003

Charlson Comorbidity Index is a measure of comorbidities and their severities; UPDRS Total = United Parkinson’s Disease Rating Scale Total score; H&Y=Hoehn and Yahr stage; cc=Cubic Centimeters