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Table 4 Cross-sectional validity for the entire group of subjects

From: Comparing a disease-specific and a generic health-related quality of life instrument in subjects with asthma from the general population

Instrument AQLQ        
Validation measure Activity limitation Symptoms Emotional function Environmental exposure     
Severity of asthma -0.33 -0.41 -0.38 -0.34     
Respiratory symptoms -0.57 -0.67 -0.55 -0.57     
Exercise limitation -0.40 -0.32 -0.35 -0.29     
Professional or leisure limitation due to asthma? -0.37 -0.35 -0.31 -0.34     
Depression -0.17 -0.10 -0.09 -0.12     
Smoking  
   Current 0.02 -0.08 -0.03 -0.06  
   Current or former -0.15 -0.10 -0.12 -0.10     
FEV 1 (% of predicted value) 0.37 0.42 0.41 0.37     
FEF 25–75 (% of predicted value) 0.31 0.21 0.26 0.24     
  SF-36        
  Physical functioning Role physical Bodily pain General health Vitality Social functioning Role emotional Mental health
Severity of asthma -0.31 -0.25 -0.20 -0.31 -0.14 -0.19 -0.14 -0.14
Respiratory symptoms -0.37 -0.27 -0.28 -0.32 -0.30 -0.26 -0.21 -0.23
Exercise limitation -0.39 -0.26 -0.19 -0.18 -0.24 -0.15 -0.13 -0.13
Professional or leisure limitation due to asthma? -0.30 -0.32 -0.25 -0.35 -0.22 -0.25 -0.21 -0.13
Depression -0.16 -0.24 -0.25 -0.20 -0.29 -0.25 -0.31 -0.27
Smoking  
   Current 0.03 0.05 -0.04 0.03 0.01 0.00 0.08 -0.02
   Current or former -0.07 -0.10 -0.13 0.09 -0.05 -0.08 0.01 0.01
FEV 1 (% of predicted value) 0.56 0.32 0.23 0.20 0.16 0.20 0.21 0.10
FEF 25–75 (% of predicted value) 0.45 0.30 0.28 0.12 0.07 0.14 0.13 0.02