Table 3.
Predictors of Quality of Life by Physical Function Measures
| Model R2 | Estimate | Partial R2* | p-value | |
|---|---|---|---|---|
| 6MWD models | ||||
| KCCQ Overall Score | 0.17 | 0.05±0.01 | 0.04 | <0.001 |
| KCCQ Physical Limitation Score | 0.10 | 0.05±0.02 | 0.04 | 0.012 |
| SF-12 PCS | 0.07 | -- | -- | -- |
| EuroQol Visual Analogue Scale | 0.03 | -- | -- | -- |
| SPPB models | ||||
| KCCQ Overall Score | 0.14 | -- | -- | -- |
| KCCQ Physical Limitation Score | 0.09 | 1.37±0.66 | 0.02 | 0.040 |
| SF-12 PCS | 0.06 | 0.54±0.25 | 0.03 | 0.030 |
| EuroQol Visual Analogue Scale | 0.03 | -- | -- | -- |
Stepwise regression parameter estimate presented with SE if entered model. All models adjusted for age, sex, BMI, non-white race, and NYHA class. Abbreviations: 6MWD – 6-minute walk distance; KCCQ – Kansas City Cardiomyopathy Questionnaire; SF-12 – Short Form 12; PCS – Physical Composite score; SPPB – Short Physical Performance Battery.
*
partial R2 for 6MWD or SPPB