Table 4. Symptom presence in respondents with gastrointestinal symptoms at various age categories.

	Age categories
	18–30 years	31–40 years	41–50 years	51–60 years	61–70 years	≥71 years
	n/N (%)	n/N (%)	n/N (%)	n/N (%)	n/N (%)	n/N (%)
Epigastric pain in general	257/650 (39.5)	238/627 (38.0)	303/799 (37.9)	323/856 (37.7)	196/594 (33.0)	88/305 (28.9)
Belching	335/672 (49.9)	288/651 (44.2)	396/870 (45.5)	428/932 (45.9)	278/678 (41.0)	153/349 (43.8)
Bloating	486/667 (72.9)	441/647 (68.2)	579/865 (66.9)	583/942 (61.9)	351/678 (51.8)	181/352 (51.4)
Heartburn in general	184/666 (27.6)	223/636 (35.1)	321/822 (39.1)	324/853 (38.0)	200/614 (32.6)	108/314 (34.4)
Borborygmi	511/669 (76.4)	411/644 (63.8)	523/864 (60.5)	518/930 (55.7)	331/669 (49.5)	179/350 (51.1)
Constipation	237/654 (36.2)	194/618 (31.4)	224/808 (27.7)	203/851 (23.9)	111/604 (18.4)	86/311 (27.7)