Table 2.

Prevalence estimates of endoscopic findings for the entire cohort and compared among age groups

Endoscopic findings	Percentage (95% CI) of endoscopic finding among age groups					P value for trend
	Total (n=4664)	<40 years (n=952)	40–49 years (n=1034)	50–59 years (n=1266)	≥60 years (n=1412)
GI malignancy	1.2 (0.9 to 1.5)	0.0 (0 to 0)	1.2 (0.7 to 2.0)	1.3 (0.8 to 2.1)	1.8 (1.3 to 2.7)	<0.001
Erosive esophagitis	9.7 (8.9 to 10.6)	7.9 (6.3 to 9.8)	9.9 (8.2 to 11.9)	9.8 (8.2 to 11.5)	10.8 (9.3 to 12.6)	0.015
Barrett’s oesophagus	0.5 (0.3 to 0.7)	0.2 (0.05 to 0.7)	0.5 (0.2 to 1.1)	0.3 (0.1 to 0.8)	0.8 (0.4 to 1.4)	0.073
Oesophageal ulcer	0.5 (0.4 to 0.8)	0.3 (0.1 to 0.9)	0.7 (0.3 to 1.4)	0.6 (0.3 to 1.3)	0.4 (0.2 to 0.9)	0.853
Peptic ulcer	4.6 (4.1 to 5.3)	2.1 (1.4 to 3.2)	3.4 (2.5 to 4.7)	4.5 (3.5 to 5.8)	7.4 (6.1 to 8.9)	<0.001
Erosive/haemorrhagic gastritis/duodenitis	17.7 (16.6 to 18.8)	10.8 (9.0 to 13.0)	17.1 (14.9 to 19.6)	18.8 (16.7 to 21.1)	21.8 (19.7 to 24.0)	<0.001
Non-erosive gastritis/duodenitis	43.6 (42.1 to 45.0)	42.8 (39.4 to 45.6)	42.7 (39.7 to 45.7)	44.1 (41.4 to 46.9)	44.4 (41.8 to 47.1)	0.299
Gastroduodenal polyp	4.6 (3.8 to 5.5)	2.0 (1.2 to 3.6)	3.9 (2.7 to 5.8)	5.2 (3.9 to 6.4)	6.1 (4.8 to 8.1)	<0.001

Data are presented as the percentage (95% CI) of patients with an endoscopic finding.

A p<0.05 indicates statistical significance.

GI, gastrointestinal.