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Table 5 Regression models between various illness perceptions items and dependent variable health-related quality of life (CRQ physical) 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

.49

 

.49

 

.59

 

Consequences

 

–.55***

 

–.55***

 

–.50***

Timeline

 

–.16

 

–.14

 

–.08

Personal control

 

–.09

 

–.08

 

–.06

Treatment control

 

.16*

 

.16*

 

.20**

Identity

 

–.09

 

.11

 

–.06

Illness concern

 

.01

 

.02

 

.06

Comprehensibility

 

.07

 

.04

 

. 07

Emotional response

 

–.15

 

–.14

 

-.17

Block 2: Demographic characteristics

      

Age

   

–.01

  

Gender

   

–.10

  

Block 3: Clinical characteristics

      

MRC dyspnoea

     

–.35**

FEV%pred

     

–.11

Comorbidity

     

.05

F change

 

11.25***

 

7.69

 

6.47***

  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.