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Table 3 Correlations between Clinical and HRQL Measures

From: Comparison of health-related quality of life measures in chronic obstructive pulmonary disease

  FEV 1 6MWT Borg Dyspnea SF-36 PCS SF-36 MCS EQ-5D index (UK) EQ-5D index (US) EQ-5D VAS SGRQ Total SGRQ Symptom SGRQ Activity
FEV1 1           
6MWT 0.28 1          
Borg Dyspnea -0.41§ -0.21 1         
SF-36 PCS 0.19 0.40§ -0.58§ 1        
SF-36 MCS 0.14 0.16 -0.34§ 0.15 1       
EQ-5D Index(UK) 0.01 0.21 -0.48§ 0.51§ 0.54§ 1      
EQ-5D Index (US) 0.03 0.21 -0.48§ 0.51§ 0.56§ 0.99§ 1     
EQ-5D VAS 0.16 0.31§ -0.48§ 0.69§ 0.49§ 0.52§ 0.53§ 1    
SGRQ Total -0.43§ -0.30§ 0.76§ -0.67§ -0.50§ -0.55§ -0.57§ -0.60§ 1   
SGRQ Symptom -0.24 -0.03 0.51§ -0.42§ -0.35§ -0.36§ -0.38§ -0.36§ 0.73§ 1  
SGRQ Activity -0.45§ -0.46§ 0.70§ -0.67§ -0.40§ -0.47§ -0.48§ -0.53§ 0.88§ 0.48§ 1
SGRQ Impact -0.36§ -0.21 0.72§ -0.59§ -0.50§ -0.56§ -0.58§ -0.60§ 0.94§ 0.63§ 0.72§
  1. p < 0.05, § p < 0.001