Disagreement between symptom-reflux association analysis parameters in pediatric gastroesophageal reflux disease investigation

Table 2 Categorization of SI, SSI and SAP

SI	SSI	SAP	Number of infants	Percent	Cumulative frequency	Cumulative percent
Irritability/reflux association
Abnormal	Abnormal	Abnormal	1	4.35	1	4.35
Abnormal	Abnormal	Normal	2	8.7	3	13.04
Abnormal	Normal	Abnormal	1	4.35	4	17.39
Abnormal	Normal	Normal	4	17.39	8	34.78
Normal	Abnormal	Abnormal	1	4.35	9	39.13
Normal	Abnormal	Normal	1	4.35	10	43.48
Normal	Normal	Normal	13	56.52	23	100
Cough/reflux association
Abnormal	Abnormal	Abnormal	1	4.35	1	4.35
Abnormal	Abnormal	Normal	1	4.35	2	8.7
Abnormal	Normal	Normal	11	47.83	13	56.52
Normal	Normal	Normal	10	43.48	23	100

SI: Symptom index, abnormal if SI≥50%; SSI: Symptom sensitivity index, abnormal if SSI≥10%; SAP: Symptom association probability, abnormal if SAP≥95%.