Table 1.

Baseline characteristics of study population.

	n = 118
Age; mean (SD)	64.8 (9.0)
Sex
Male	60 (53.1%)
Female	53 (46.9%)
Race
Malay	32 (28.3%)
Chinese	71 (62.8%)
Indian	8 (7.1%)
Others	2 (1.8%)
Age of onset of PD, years; mean (SD)	59 (9.9)
Duration of illness of PD, years	5 (2.0–8.0)
Hoehn and Yahr	2 (2.0–3.0)
Stage 1	26 (23%)
Stage 2	54 (48.7%)
Stage 3	30 (26.5%)
Stage 4	2 (1.8%)
Total PDQ-39 score	13.0 (5.0–28.0)
Total NMSS score	9.0 (6.0–15.0)

Data is expressed as median (IQR) unless otherwise stated.

PDQ-39: the 39-item Parkinson's disease questionnaire (range of score 0–100); NMSS: nonmotor symptoms scale for Parkinson's disease (range of possible scores 0–360).