Table A.1.

kappa Coefficients [7] between 16 criteria as similarity measures.

	Distended abdomen	Diarrhea with explosive stool	Diarrhea with foul smelling stool	Lethargy	Explosive discharge of gas and stool on rectal exam	Fever	Dilated loops of bowel on AXR	Leukocytosis	Decreased peripheral perfusion	Multiple air fluid levels	Previous history of suspected enterocolitis	Left shift on Complete blood count	Diarrhea With bloody stool	Cutoff sign In rectosigmoid region	Sawtooth appearance with irregular mucosal lining
Diarrhea with explosive stool	*0.743*
Diarrhea with foul smelling stool	*0.719*	*0.786*
Lethargy	*0.665*	*0.574*	*0.542*
Explosive discharge of gas and stool on rectal exam	*0.684*	*0.797*	*0.665*	*0.476*
Fever	*0.594*	*0.441*	*0.458*	*0.531*	*0.383*
Dilated loops of bowel on AXR	*0.44*	*0.303*	*0.372*	*0.321*	*0.397*	*0.337*
Leukocytosis	*0.448*	*0.469*	*0.372*	*0.438*	*0.393*	*0.521*	*0.33*
Decreased peripheral perfusion	*0.438*	*0.395*	*0.411*	*0.481*	*0.435*	*0.368*	−0.15	0.107
Multiple air fluid levels	*0.296*	*0.216*	*0.227*	*0.208*	*0.291*	0.149	*0.598*	*0.331*	−0.012
Previous history of suspected enterocolitis	*0.264*	*0.296*	*0.308*	*0.297*	*0.239*	*0.311*	*0.463*	*0.354*	−0.101	*0.484*
Right shift on complete blood count	*0.315*	*0.234*	*0.308*	*0.297*	*0.239*	*0.529*	*0.298*	*0.539*	−0.001	0.026	*0.398*
Diarrhea with bloody stool	*0.111*	0.086	0.091	*0.113*	*0.12*	*0.204*	*0.153*	*0.187*	0.087	0.119	0.133	0.133
Cutoff sign in rectosigmoid region	*0.075*	0.036	0.038	*0.132*	0.053	*0.139*	*0.174*	−0.031	−0.031	−0.03	−0.029	*0.158*	−0.021
Sawtooth appearance with irregular mucosal lining	0.038	0.053	−0.017	−0.017	*0.072*	−0.017	*0.09*	*0.111*	−0.016	*0.169*	−0.016	−0.016	−0.013	−0.012
Pneumatosis	0.038	0.053	0.056	*0.068*	*0.072*	*0.072*	*0.09*	−0.016	−0.016	*0.169*	*0.187*	−0.016	−0.013	−0.012	−0.009

Note: Bold-italic values were significant at 0.05 significance level. Bold and underlined values denote moderate to strong associations.