Prevalence of gastroesophageal reflux disease in children with extraesophageal manifestations using combined-video, multichannel intraluminal impedance-pH study

Table 2 Comparing symptoms recorded by conventional and combined visual data object -monitoring in children who underwent multichannel intraluminal impedance-pH study (n = 17), n, (%)

Characteristics	Conventional MII-pH study	Combined video-MII-pH study	P value
Total recorded symptoms	120	220	0.062
Cough	31 (25.83)	46 (20.90)	0.259
Irritability	38 (31.67)	101 (45.90)	0.114
Apparent secretion	3 (2.50)	43 (19.55)	0.02
GI symptoms (vomiting or heartburn)	48 (40.00)	33 (15.00)	0.339
Symptom indices (median, IQR)
Symptom index	0 (0–5.00)	0 (0–11.65)	0.306
Symptom sensitivity index	0 (0–2.65)	0 (0–5.80)	0.306
Symptom associated index	0 (0–37.60)	0 (0–93.15)	0.306
Diagnosis GERD using symptom indices	2 (11.76)	5 (29.41)	0.398

GI: Gastrointestinal; GERD: Gastroesophageal reflux disease; MII-pH: Multichannel intraluminal impedance-pH; IQR Interquartile range.