Table 7. Relationship between cough and reflux variants, number of patients

Positive parameters	Reflux variants			Total N = 37	Chronic cough (n=20)
	Acid reflux	Weakly acid reflux	Alkaline reflux		Dry n=17	Wet n=3
	n (%)	n (%)	n (%)	n (%)
SI	0	7	0	12
SAP	10	14	5	23
SI and SAP	10 (38)	18 (69)	5 (19)	26 (70)	16	3

SI - symptom index, SAP - index of possible association of symptoms and reflux. In this study, to assess the causal relationship with gastroesophageal reflux, the symptom noted during the pH-MII measurement was cough