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Table 6 Regression models between separate illness perception items and dependent variable health-related quality of life (CRQ emotional) N = 87

From: Perceived quality of life in chronic obstructive pulmonary disease patients: a cross-sectional study in primary care on the role of illness perceptions

 

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

 

.32

 

.35

 

Consequences

 

–.17

 

-.17

 

–.14

Timeline

 

.01

 

.03

 

.05

Personal control

 

.03

 

.05

 

.05

Treatment control

 

.17

 

.17

 

.19*

Identity

 

–.08

 

-.10

  

Illness concern

 

–.03

 

-.01

  

Comprehensibility

 

–.53

 

-.09

  

Emotional response

 

–.40**

 

–.39**

 

–.33*

Block 2: Demographic characteristics

      

Age

   

–.02

  

Gender

   

–.14

  

Block 3: Clinical characteristics

      

MRC dyspnoea

     

–.23*

FEV%pred

     

–.10

Comorbidity

     

.05

F change model

 

6.01***

 

1.08

 

1.74

  1. R2 is an adjusted R2. β is a standardised β.
  2. * P ≤ 0.05; ** P ≤ 0.01; *** p < 0.001.
  3. FEV%pred = forced expiratory volume percentage from predicted, MRC dyspnoea = Medical Research Council dyspnoea scale.