Table 2.
Pearson Correlations and Independent t-test Results between HRQOL and Demographic Characteristics for Australians with PD
| Demographic characteristic | PDQ-39 SI; mean (SD) | r | p-value |
|---|---|---|---|
| Age, y | — | −0.04 | 0.58 |
| PD duration, y | — | 0.37 | <0.001* |
| Sex | — | — | 0.48 |
| Male | 21.4 (12.7) | — | — |
| Female | 20.0 (12.9) | — | — |
| Disease severity | — | — | <0.001* |
| Mild (HY Stages ≤2) | 17.0 (11.2) | — | — |
| Moderate (HY Stages ≥2.5) | 23.9 (13.1) | — | — |
| Comorbidities | — | — | 0.82 |
| Yes | 20.9 (12.8) | — | — |
| No | 22.5 (10.6) | — | — |
*
Significant at p<0.001.
HRQOL=health-related quality of life; PD=Parkinson disease; PDQ-39=Parkinson's Disease Questionnaire; SI=summary index; HY=Hoehn and Yahr.