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Table 3 The Malay-ECOHIS reliability analysis: inter-item correlation coefficients of the 13 items

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

  Pain Drinking Eating Pronouncing Absence Sleeping Irritation Smiling Talking Upset Guilty Work Financial
Pain 1.000             
Drinking .489 1.000            
Eating .491 .641 1.000           
Pronouncing .350 .532 .406 1.000          
Absence .121 .236 .180 .129 1.000         
Sleeping .455 .467 .332 .185 .115 1.000        
Irritation .415 .478 .615 .249 −.038 .533 1.000       
Smiling .219 .292 .546 .122 −.030 .347 .622 1.000      
Talking .110 .301 .416 .211 −.023 .385 .521 .807 1.000     
Upset .270 .200 .386 .363 .066 .124 .311 .271 .126 1.000    
Guilty .373 .280 .323 .330 .049 .263 .392 .113 .084 .763 1.000   
Work .196 .304 .138 .137 .190 .195 .176 .083 .167 .219 .328 1.000  
Financial −.001 −.013 −.049 −.060 −.018 −.039 .005 .031 .075 .077 .106 .172 1.000