Table 1.

Results of cognitive function tests in drug-naïve and non-demented PD patients

	Patients with orthostatic hypotension (n = 18)	Patients without orthostatic hypotension (n = 27)	p
Attention
Digit-span forward	5.5 ± 1.6	4.9 ± 1.5	0.248
Digit-span backward	3.1 ± 0.9	2.9 ± 1.2	0.874
Language
Naming K-BNT	44.8 ± 6.1	41.6 ± 10.2	0.405
Repetition	15.0 ± 0.0	14.5 ± 0.8	0.070
Calculation
Add	2.5 ± 0.7	2.2 ± 0.9	0.296
Subtraction	2.4 ± 0.7	2.3 ± 0.9	0.978
Multiplication	2.0 ± 1.2	1.5 ± 1.3	0.190
Division	1.7 ± 1.2	1.3 ± 1.2	0.232
Visuospatial function
RCFT copy	28.7 ± 9.5	26.9 ± 10.6	0.638
Memory
SVLT recall	16.4 ± 4.3	16.3 ± 5.5	0.871
SVLT delayed recall	4.7 ± 3.1	4.5 ± 2.4	0.700
SVLT recognition	18.2 ± 2.9	19.8 ± 2.3	0.046
RCFT recall	9.1 ± 7.4	7.8 ± 8.9	0.277
RCFT delayed recall	10.1 ± 6.4	8.6 ± 8.3	0.282
RCFT recognition	19.3 ± 2.0	18.0 ± 2.1	0.071
Frontal/Executive function
COWAT-animal	11.2 ± 3.9	11.5 ± 3.1	0.834
COWAT-supermarket	13.3 ± 4.4	12.6 ± 4.8	0.701
COWAT-phonemic	15.4 ± 8.2	15.7 ± 10.6	0.813
Stroop word reading	106.3 ± 14.1	96.8 ± 25.8	0.317
Stroop color reading	57.1 ± 34.6	67.0 ± 28.9	0.359

PD: Parkinson’s disease, K-BNT: Korean-Boston Naming Test, RCFT: Rey Complex Figure Test, SVLT: Seoul Verbal Learning Test, COWAT: Controlled Oral Word Association Test.