Table 3

Results of stepwise multiple regression analysis of PDQ-39 scores

Predictors Standardised regression coefficient3-150 R2 R2change t Value p Value
Beck depression inventory score0.470.545.45<0.0001
Schwab and England disability score−0.310.640.13.41<0.001
Postural instability0.240.690.053.34<0.001
Mini mental state examination score−0.170.720.022.14<0.037
Multiple R=0.85
R 2=0.72
Adjusted R2 =0.70
  • 3-150 Regression coefficient for each individual variable.

  • R2 is the proportion of the PDQ 39 variation explained by the model taking into account the listed factors cumulatively.