Table 3 Results of the reader study in the gastroscopy data set.

ICD	Diagnosis	Typical	Not typical	Missing	Device	Artifact
B37	Candidiasis	0.68	0.18	0.03	0.07	0.03
K26	Duodenal ulcer	0.60	0.23	0.00	0.15	0.02
K20	Oesophagitis	0.57	0.32	0.02	0.08	0.02
K22	Other diseases of oesophagus	0.55	0.15	0.22	0.05	0.03
C15	Malignant neoplasm of oesophagus	0.50	0.13	0.13	0.18	0.05
K29	Gastritis and duodenitis	0.48	0.23	0.03	0.18	0.07
C16	Malignant neoplasm of stomach	0.48	0.33	0.05	0.13	0.00
K25	Gastric ulcer	0.47	0.33	0.10	0.08	0.02
K92	Other diseases of digestive system	0.47	0.35	0.03	0.15	0.00
D13	Benign neoplasm of other and ill-defined parts of digestive system	0.42	0.32	0.07	0.18	0.02
K21	Gastro-oesophageal reflux disease	0.42	0.38	0.02	0.18	0.00
CXX	Malignant neoplasm of oesophagus or stomach	0.40	0.17	0.12	0.28	0.03
R11	Nausea and vomiting	0.38	0.37	0.08	0.13	0.03
K31	Other diseases of stomach and duodenum	0.37	0.35	0.02	0.22	0.05
D37	Neoplasm of uncertain/unknown behaviour, oral cavity/digestive organs	0.37	0.43	0.02	0.17	0.02
R13	Dysphagia	0.28	0.47	0.12	0.10	0.03
I85	Oesophageal varices	0.27	0.48	0.03	0.20	0.02
D48	Neoplasm of uncertain/unknown behaviour of other/unspecified sites	0.25	0.43	0.07	0.23	0.02
K57	Diverticular disease of intestine	0.20	0.68	0.00	0.10	0.02
R12	Heartburn	0.18	0.65	0.05	0.10	0.02
K91	Postprocedural disorders of digestive system, not elsewhere classified	0.17	0.28	0.10	0.42	0.03
K44	Diaphragmatic hernia	0.12	0.57	0.00	0.30	0.02
R10	Abdominal and pelvic pain	0.10	0.75	0.08	0.05	0.02

For each diagnosis category in the gastroscopy dataset, the AI system selected 60 highly predictive images (2 highest scoring images from 10 highest scoring patients in each of the 3 folds). These images were manually classified into five categories by a trained observer. The fraction of images in each category in every category is shown.

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