Table 3.

Correlation between functional impairment and the diagnostic latency

Variables	Time C
Onset age a	0.088 (0.315)
UPDRS-III score a	0.846(< 0.001)**
NMSquest score a	0.615(< 0.001)**
HAMA score a	0.321(< 0.001)**
HAMD score a	0.361(< 0.001)**
MMSE score a	−0.115 (0.195)

Results were presented as ‘rho (p value)’; ^aanalyzed by spearman correlation; ** = p < 0.01; Bold values indicated statistically significant values; UPDRS = Unified Parkinson Disease Rating Scale; NMSquest = Non-motor symptoms questionnaire; HAMA = Hamilton Anxiety Scale; HAMD = Hamilton Depression Scale;