Nonmotor Symptoms in a Malaysian Parkinson’s Disease Population

Table 4

Correlation between NMSS domains and PDQ-39 scores.

NMSS domains	Median (IQR)	𝑟𝑠	𝑃
Cardiovascular	0.0 (0.0–2.0)	0.563	<0.001
Sleep/fatigue	2.0 (0.0–3.0)	0.469	<0.001
Mood/cognition	1.0 (0.0–3.0)	0.588	<0.001
Perceptual problems	0.0 (0.0-0.0)	0.336	<0.001
Attention/memory	1.0 (0.0–3.0)	0.281	0.003
Gastrointestinal	2.0 (0.0–3.0)	0.412	<0.001
Urinary	0.0 (0.0–1.0)	0.154	0.104
Sexual function	0.0 (0.0-0.0)	0.173	0.067
Miscellaneous	1.0 (0.0–2.0)	0.258	0.006
NMSS total	9.0 (6.0–15.0)	0.727	<0.001

𝑟_𝑠: Spearman’s rank correlation coefficient; NMSS: nonmotor symptoms scale for Parkinson’s disease; PDQ-39: the 39-item Parkinson’s disease questionnaire.