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Table 4 Sensitivity, Specificity, Positive and Negative predictive values of each question of the Edinburgh Claudication Questionnaire

From: Validation of the Edinburgh Claudication Questionnaire in 1st generation Black African-Caribbean and South Asian UK migrants: A sub-study to the Ethnic-Echocardiographic Heart of England Screening (E-ECHOES) study

ECQ Question Sensitivity (%) Specificity (%) PPV (%) NPV (%)
English (n = 37)     
Q2 25 44 8 75
Q3 100 20 19 100
Q4 75 44 20 90
Q5 41.7 48 13 81
Q6 66.7 20 14 76
Punjabi (n = 37)     
Q2 50 45.2 7 91
Q3 100 32.3 8 1
Q4 100 32.3 11 1
Q5 66.7 64.5 14 96
Q6 83.3 22.6 9 94
Bengali (n = 20)     
Q2 75 62.5 10 98
Q3 100 62.5 5 100
Q4 75 40 6 97
Q5 25 50 3 93
Q6 100 62.5 5 1