Validation of Parkinson’s Disease-Related Questionnaires in South Africa

Table 2

Measurement scores obtained by participants (construct validity step).

Measurement	n	Mean	SD	Min	Max
UPDRS3	416	10.1	7.8	0	52
Dominant hand Grooved Pegboard time	414	106.7	44.7	43.2	300
Nondominant hand Grooved Pegboard time	408	116.9	47.7	51.4	300
PDQ-39	412	33.1	21.3	0	115
PDSQ	416	1.9	2.1	0	8

UPDRS3, Unified Parkinson’s Disease Rating Scale motor subsection 3; PDQ-39, Parkinson’s Disease Questionnaire; PDSQ, Parkinson’s Disease Screening Questionnaire; SD, standard deviation.