| SF-36 | AQ20 | LHFQ | ||||
| PCS | MCS | Total | Physical | Emotional | ||
| SF-36 | ||||||
| PCS | 1.00 | |||||
| MCS | 0.20 | 1.00 | ||||
| AQ20# | -0.53 | -0.53 | 1.00 | |||
| LHFQ# | ||||||
| Total | -0.63 | -0.64 | 0.75 | 1.00 | ||
| Physical | -0.73 | -0.53 | 0.74 | 1.00 | ||
| Emotional | -0.45 | -0.69 | 0.66 | 0.73 | 1.00 | |
Correlations are shown for 275 visits with complete data for all three quality-of-life instruments. SF-36: 36-item Short Form Health Survey; PCS: physical component summary; MCS: mental component summary; AQ20: Airways Questionnaire 20; LHFQ: Living with Heart Failure Questionnaire. p<0.01 for all correlations based on robust standard errors used to account for repeated measures. #: instruments are negatively weighted (higher scores represent worse health status).