Table 3.

Correlation between nonmotor symptoms scores (domains and total) and Parkinson’s Disease Questionnaire Summary Index score

Domains	rs	P
Cardiovascular	0.556	<0.001*
Sleep/fatigue	0.713	<0.001**
Mood/cognition	0.740	<0.001**
Perceptual problems/hallucinations	0.417	<0.001*
Attention/memory	0.353	<0.001*
Gastrointestinal	0.533	<0.001*
Urinary	0.621	<0.001*
Sexual function	0.494	<0.001*
Miscellaneous	0.539	<0.001*
Total	0.851	<0.001**

*Moderate correlation, **Strong correlation