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Table 4 Reliability analysis: corrected item-total correlation of the 13 items of the Malay-ECOHIS, Cronbach’s alpha coefficient, Intraclass Correlation Coefficient (ICC) and kappa coefficient

From: The Malay version of the Early Childhood Oral Health Impact Scale (Malay-ECOHIS) – assessing validity and reliability

  Corrected item-total correlation Cronbach’s alpha if item deleted
Pain .55 .81
Drinking .64 .80
Eating .68 .80
Pronouncing .47 .82
Absence .15 .83
Sleeping .50 .81
Irritation .68 .80
Smiling .49 .82
Talking .45 .82
Upset .51 .81
Guilty .54 .81
Work .32 .83
Financial .04 .84
Cronbach’s alpha coefficient 0.83  
Intraclass Correlation Coefficient (ICC) 0.94  
Weighted kappa value 0.95