From: Development and psychometric assessment of the COPD and Asthma Sleep Impact Scale (CASIS)
PRO Measure | Spearman Correlation |
---|---|
Number of bad days1 | 0.61 |
Overall Health Status | 0.50 |
LCOPD | 0.58 |
SGRQ--Symptoms | 0.57 |
SGRQ--Activities | 0.53 |
SGRQ--Impact | 0.65 |
SGRQ--Total Score | 0.68 |