Table 3

Cumulative incidence of GORS from 1995–7 (HUNT 2) to 2006–9 (HUNT3/Mini-Q), stratified by degree of GORS, sex and age groups^*

	Any GORS^†
	Cumulative incidence						OR and 95% CI^‡
	Total N=20 311
	Number		%		95% CI
	5904		29.1		28.4 to 29.7
	Women N=11 394			Men N=8917			Women		Men
Age (years)^§	Number	%	95% CI	Number	%	95% CI	OR	95% CI	OR	95% CI
All ages	3209	28.2	27.3 to 29.0	2695	30.2	29.3 to 31.2
<40	283	20.5	18.3 to 22.6	243	29.3	26.2 to 32.4	1.00	Reference	1.61	1.32 to 1.96
40–49	704	25.9	24.2 to 27.5	548	29.6	27.5 to 31.7	1.36	1.16 to 1.59	1.63	1.38 to 1.92
50–59	900	29.1	27.5 to 30.7	775	31.3	29.4 to 33.1	1.59	1.37 to 1.85	1.77	1.51 to 2.07
60–69	823	33.3	31.5 to 35.2	666	30.6	28.6 to 32.5	1.94	1.66 to 2.27	1.71	1.46 to 2.01
≥70	499	28.9	26.8 to 31.1	463	29.4	27.1 to 31.6	1.58	1.34 to 1.87	1.62	1.36 to 1.92

	Severe GORS^†
	Cumulative incidence						OR and 95% CI^‡
	Total N=20 311
	Number		%		95% CI
	510		2.5		2.3 to 2.7
	Women N=11 394			Men N=8917			Women		Men
Age (years)^§	Number	%	95% CI	Number	%	95% CI	OR	95% CI	OR	95% CI
All ages	319	2.8	2.5 to 3.1	191	2.1	1.8 to 2.4
<40	31	2.2	1.5 to 3.0	15	1.8	0.9 to 2.7	1.00	Reference	0.80	0.43 to 1.50
40–49	66	2.4	1.8 to 3.0	40	2.2	1.5 to 2.8	1.08	0.70 to 1.67	0.96	0.60 to 1.55
50–59	95	3.1	2.5 to 3.7	53	2.1	1.6 to 2.7	1.38	0.92 to 2.08	0.95	0.61 to 1.49
60–69	85	3.4	2.7 to 4.2	48	2.2	1.6 to 2.8	1.55	1.03 to 2.36	0.98	0.62 to 1.55
≥70	42	2.4	1.7 to 3.2	35	2.2	1.5 to 2.9	1.09	0.68 to 1.74	0.99	0.61 to 1.62

↵* Cumulative incidence was calculated from no GORS in HUNT 2 to any or severe GORS in HUNT 3/Mini-Q, respectively.
↵† Any gastro-oesophageal reflux symptoms (GORS): minor or severe complaints with heartburn or acid regurgitation; severe GORS: severe complaints with heartburn or acid regurgitation.
↵‡ OR and 95% CI of incident GORS for each sex and age group.
↵§ Age at follow-up in HUNT 3/Mini-Q.