Table 3: Correlation of PDSI score with age, gender, duration of PD, SRSS, and LSS.

Spearman’s rho p value
Age 0.002 0.986
Gender 0.197 0.150
Duration of PD 0.131 0.341
Self-rated Speech Scale (SRSS) 0.315 < 0.05
Life Satisfaction Scale (LSS) -0.448 < 0.001