| Model 1 (Block 1) | Model 2 (Block 1 and 2) | Model 3 (Block 1 and 3) | |||
---|---|---|---|---|---|---|
 | R2 | β | R2 | β | R2 | β |
Block 1:Perceptions | .32 | Â | .32 | Â | .35 | Â |
Consequences |  | –.17 |  | -.17 |  | –.14 |
Timeline | Â | .01 | Â | .03 | Â | .05 |
Personal control | Â | .03 | Â | .05 | Â | .05 |
Treatment control | Â | .17 | Â | .17 | Â | .19* |
Identity |  | –.08 |  | -.10 |  |  |
Illness concern |  | –.03 |  | -.01 |  |  |
Comprehensibility |  | –.53 |  | -.09 |  |  |
Emotional response |  | –.40** |  | –.39** |  | –.33* |
Block 2: Demographic characteristics | Â | Â | Â | Â | Â | Â |
Age |  |  |  | –.02 |  |  |
Gender |  |  |  | –.14 |  |  |
Block 3: Clinical characteristics | Â | Â | Â | Â | Â | Â |
MRC dyspnoea |  |  |  |  |  | –.23* |
FEV%pred |  |  |  |  |  | –.10 |
Comorbidity | Â | Â | Â | Â | Â | .05 |
F change model | Â | 6.01*** | Â | 1.08 | Â | 1.74 |