Table 1 Descriptive statistics of the meta-analyses overall and by cancer type included in the umbrella review grading the evidence on diet and cancer risk.

	Total	Head and neck^a	Esophageal	Stomach	Colorectal	Liver	Gallbladder	Lung	Skin	Breast	Kidney	Urinary bladder
Number of meta-analyses	860	38	48	122	221	20	2	144	18	163	41	43
Number of studies
Median	5	4	3	4	6	4	2.5	5	4	6	4	4
Min–max	2–33	2–23	2–17	2–23	2–25	2–14	2–3	2–32	2–7	2–33	2–16	2–11
Number of participants
Median	434,534	517,979	947,646	620,638	512,243	970,317	370,938	247,214	114,222	301,936	523,757	386,216
Min–max	236–5,831,157	168,996–5,831,157	30,776–3,770,260	2629–3,948,365	1069–5,218,250	117,042–4,341,949	222,216–519,660	559–5,084,099	5498–1,741,417	236–5,197,851	119,537–2,192,726	1233–1,630,981
Number of cases
Median	2152	700	636	1301	3374	848	388	1935	2146	4526	1437	1905
Min–max	56–117,514	56–14,730	100–5666	125–13,549	239–36,942	211–5977	375–400	211–23,607	242–33,548	81–117,514	272–4171	265–5409

^aThis report presents results for cancers of mouth, pharynx, larynx, and upper aerodigestive tract.

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