Table 3:

Expected and Observed Number of Cancers and Observed to Expected Ratio for Leading Cancers with Elevated Incidence^b by Region, AI/AN Males, PRCDA Counties 2012–2016

	Observed Casesc	Expected Casesd	Excess Cancers	Observed to Expected Ratio
Northern Plains
Liver	142	42	100	3.38
Stomach	73	32	41	2.28
Kidney	238	112	126	2.13
Colorectal	358	192	166	1.86
Lung	457	286	171	1.60
Total Excess Cancer Cases			604
Alaska
Stomach	64	12	52	5.33
Colorectal	180	74	106	2.43
Esophageal	31	15	16	2.07
Lung	195	107	88	1.82
Oral Cavity and Pharynx	61	36	25	1.69
Pancreas	38	23	15	1.65
Kidney	69	45	24	1.53
Total Excess Cancer Cases			326
Southern Plains
Liver	138	40	98	3.45
Kidney	342	174	168	1.97
Stomach	75	46	29	1.63
Myeloma	77	48	29	1.60
Colorectal	520	321	199	1.62
Lung	730	544	186	1.34
Esophageal	76	58	18	1.31
Total Excess Cancer Cases			727
Pacific Coast
Liver	234	87	147	2.69
Kidney	184	144	40	1.28
Lung	431	358	73	1.20
Colorectal	296	259	37	1.14
Total Excess Cancer Cases			297
East
Liver	60	32	28	1.88
Total Excess Cancer Cases			28
Southwest
Stomach	128	50	78	2.56
Liver	221	87	134	2.54
Kidney	346	179	167	1.93
Myeloma	80	50	30	1.60
Colorectal	401	342	59	1.17
Total Excess Cancer Cases			468

^aAI/AN race is reported by NPCR and SEER registries or through linkage with the IHS patient registration database. Includes only AI/AN of non-Hispanic origin. Source: Cancer registries in the Centers for Disease Control and Prevention’s National Program of Cancer Registries (NPCR) and/or the National Cancer Institute’s Surveillance, Epidemiology and End Results Program (SEER)

^bLeading cancers with elevated incidence selected from 15 most common cancers. See Web Table 1

^cObserved counts are the number of cancer cases observed in the dataset

^dExpected counts are calculated by applying age specific cancer incidence rates from the White population to the AI/AN population