Table 5 Cross-sectional construct validation (Baseline) (Pearson correlation coefficients)
Study 1 | ||||||
|---|---|---|---|---|---|---|
AQLQ12+ | Age | FEV1% pred | PEF | Symptoms | Night waking | Rescue bd |
Overall | ≥ 18 yr | 0.15 | 0.29 | -0.50 | -0.50 | -0.35 |
12–17 yr | -0.11 | 0.13 | -0.37 | -0.38 | -0.21 | |
Symptoms | ≥ 18 yr | 0.14 | 0.22 | -0.53 | -0.54 | -0.39 |
12–17 yr | -0.11 | 0.15 | -0.34 | -0.40 | -0.23 | |
Activities | ≥ 18 yr | 0.14 | 0.32 | -0.47 | -0.45 | -0.29 |
12–17 yr | -0.13 | 0.15 | -0.37 | -0.35 | -0.16 | |
Emotions | ≥ 18 yr | 0.15 | 0.25 | -0.36 | -0.35 | -0.28 |
12–17 yr | -0.10 | 0.05 | -0.28 | -0.27 | -0.23 | |
Environment | ≥ 18 yr | 0.07 | 0.24 | -0.34 | -0.36 | -0.22 |
12–17 yr | -0.01 | 0.06 | -0.25 | -0.25 | -0.12 | |
Study 2 | ||||||
AQLQ12+ | Age | FEV1% pred | PEF | Symptoms | Night waking | Rescue bd |
Overall | ≥ 18 yr | 0.06 | 0.23 | -0.49 | -0.47 | -0.35 |
12–17 yr | 0.03 | 0.37 | -0.46 | -0.39 | -0.28 | |
Symptoms | ≥ 18 yr | 0.06 | 0.17 | -0.56 | -0.54 | -0.42 |
12–17 yr | 0.04 | 0.32 | -0.49 | -0.42 | -0.32 | |
Activities | ≥ 18 yr | 0.06 | 0.28 | -0.40 | 0.41 | -0.28 |
12–17 yr | 0.05 | 0.35 | -0.42 | -0.41 | -0.21 | |
Emotions | ≥ 18 yr | 0.06 | 0.18 | -0.36 | -0.36 | -0.25 |
12–17 yr | -0.02 | 0.36 | -0.32 | -0.31 | -0.25 | |
Environment | ≥ 18 yr | 0.03 | 0.21 | -0.34 | -0.34 | -0.23 |
12–17 yr | -0.01 | 0.40 | -0.43 | -0.36 | -0.25 | |