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