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Table 5 Correlations (Na) between study questionnaires

From: Validation of subscales of the Severe Asthma Questionnaire (SAQ) using exploratory factor analysis (EFA)

 

SAQ score

SAQ My Life

SAQ My Mind

SAQ My Body

SAQ global score

EQ-5D-5L Index value

EQ-5D-5L item 5-anxiety/depression

EQ-5D VAS

SAQ My Life

0.95**

(449)

       

SAQ My Mind

0.90**

(449)

0.77**

(449)

      

SAQ My Body

0.91**

(449)

0.80**

(449)

0.77**

(449)

     

SAQ global score

0.77**

(441)

0.79**

(441)

0.64**

(441)

0.66**

(441)

    

EQ-5D-5L Index value

0.72**

(374)

0.73**

(374)

0.64**

(374)

0.59**

(374)

0.66**

(376)

   

EQ-5D-5L item 5–Anxiety/Depression

− 0.64**

(376)

− 0.54**

(376)

− 0.73**

(376)

− 0.56**

(376)

− 0.50**

(378)

− 0.72**

(381)

  

EQ-5D VAS

0.73**

(375)

0.74**

(375)

0.63**

(375)

0.62**

(375)

0.79**

(379)

0.72**

(379)

− 0.52**

(381)

 

ACQ score

− 0.75**

(253)

− 0.79**

(253)

− 0.62**

(253)

− 0.60**

(253)

− 0.77**

(256)

− 0.66**

(240)

0.48**

(241)

− 0.73**

(240)

ACT total

0.71**

(195)

0.72**

(195)

0.62**

(195)

0.64**

(195)

0.68**

(194)

0.59**

(139)

− 0.50**

(140)

0.63**

(141)

  1. **p < 0.01
  2. aN varies due to availability of data