Table 2.

Distribution of IGQ global score in the study population (n 936) (Mean values and standard deviations)

	Mean	sd	Minimum	Maximum	Median	Q1–Q3
Global score	11·9	11·2	0	70·1	8·5	3·9–15·7
Difficult gas evacuation	7·3	15·2	0	100	0	0–12·5
Stomach rumbling	12	17·6	0	100	5	0–17·5
Bad breath	10·8	15·8	0	90	0	0–17·5
Belching	10·5	15·5	0	85	0	0–15
Flatulence	17·8	17·4	0	100	13·3	3·3–26·7
Bloating	12·7	16·6	0	91·7	5·8	0–18·3

IGQ, Intestinal Gas Questionnaire; Q1, first quartile; Q3, third quartile.