Table 2. Summary of case controls.

Study number	Age at recruitment (years)	Gender	Ethnic origin	Indication for endoscopy
N001	54	Female	White	Microcytic anaemia
N002	26	Male	White	Coeliac screening
N003	23	Female	White	Anaemia
N004	53	Female	White	Anaemia
N005	54	Female	White	Anaemia
N006	46	Female	White	Diarrhoea
N007	74	Male	White	Anaemia
N008	34	Male	White	Dyspepsia
N009	44	Female	White	Epigastric pain
N010	63	Female	White	Epigastric pain
N011	77	Female	White	Dyspepsia, dilated pancreatic duct
N012	53	Male	White	Epigastric Pain
N013	69	Female	White	Dyspepsia
N014	59	Female	White	Dyspepsia, previous salmonella
N015	70	Male	White	Maleana
N016	36	Female	White	Abdominal pain
N017	46	Female	White	Dyspepsia
N018	58	Female	White	Microcytic anaemia
N019	41	Male	White	Epigastric Pain
N020	58	Male	White	Nausea and vomiting
N021	24	Female	White	Coeliac screening
N022	60	Female	White	Iron deficiency anaemia
N023	57	Female	White	Microcytic anaemia
N024	39	Male	White	Dyspepsia
N025	64	Male	White	Dyspepsia
N026	59	Female	White	Iron deficiency anaemia
N027	73	Female	White	Altered bowel habit and anaemia
N028	46	Female	White	Anaemia
N029	49	Female	White	Abdominal pain and weight loss
N030	58	Female	White	Weight loss
N031	79	Male	White	Anaemia
N032	69	Male	White	Anaemia
N033	23	Female	White	Dyspepsia
N034	24	Male	Asian	Weight loss
N035	54	Female	White	Dyspepsia
N036	71	Female	White	Weight loss
N037	65	Female	White	Dyspepsia and weight loss
N038	56	Female	White	Weight loss and vomiting
N039	32	Male	White	Abdominal pain and possible maleana
N040	63	Female	White	Weight loss