The Influence of Parkinson’s Disease Motor Symptom Asymmetry on Hand Performance: An Examination of the Grooved Pegboard Task

Table 1

Demographic characteristics of participants with PD.

	Right-side affected	Left-side affected
Number	79	86
Male : female	49 : 30	54 : 32
Age	M = 70.21, SD = 10.36	M = 71.78, SD = 8.32
UPDRS	M = 27.46, SD = 10.30	M = 29.68, SD = 10.71
Right UPDRS	M = 11.67, SD = 3.86	M = 7.92, SD = 3.83
Left UPDRS	M = 7.14, SD = 4.06	M = 11.99, SD = 4.11
|Right–left|	M = 5.13, SD = 3.25	M = 4.28, SD = 3.02
0.5–4.5	n = 41	n = 53
5	n = 28	n = 29
10+	n =10	n = 4