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Table 7 Correlation between SAQ-CAN and other measures

From: Psychometric evaluation of a Canadian version of the Seattle Angina Questionnaire (SAQ-CAN)

Instrument SAQ-CAN Original SAQ Other measures
IPF OPF ASB TRE PL AS AF TS DP EQ5D_VAS HADS_D HADS_A
IPF 1            
OPF 0.415 1           
ASB 0.384 0.469 1          
TRE 0.201 0.202 0.477 1         
PL 0.619 0.958 0.534 0.237 1        
AS 0.238 0.321 0.688 0.337 0.357 1       
AF 0.314 0.369 0.842 0.358 0.426 0.475 1      
TS 0.221 0.216 0.496 0.953 0.255 0.318 0.388 1     
DP 0.363 0.444 0.901 0.459 0.504 0.493 0.578 0.478 1    
EQ5D_VAS 0.293 0.298 0.394 0.281 0.347 0.259 0.265 0.282 0.412 1   
HADS_D − 0.061 − 0.016 − 0.067 − 0.059 − 0.034 − 0.015 0.038 − 0.063 − 0.085 − 0.068 1  
HADS_A 0.055 0.053 0.143 0.100 0.060 0.094 0.083 0.102 0.156 0.115 0.684 1
  1. IPF indoor physical functioning, OP outdoor physical functioning, ASB angina symptoms burden, TRE treatment experience, PL SAQ physical limitations, AF SAQ angina frequency, AS SAQ angina stability, TS SAQ treatment satisfaction, DP SAQ disease perception, EQ5D_VAS EQ5D visual analogue scale, HADS_D hospital anxiety and depression scale (HADS) depression subscale, HADS_A HADS anxiety subscale. All correlations are significant at either p < 0.01 or p < 0.05