Skip to main content
. Author manuscript; available in PMC: 2022 Apr 6.
Published in final edited form as: Am J Epidemiol. 2021 Apr 6;190(4):528–538. doi: 10.1093/aje/kwaa222

Table 4:

Expected and Observed Number of Cancers and Observed to Expected Ratio for Leading Cancers with Elevated Incidenceb by Region AI/AN Females, PRCDA Counties 20122016

Observed Casesc Expected Casesd Excess Cancers Observed to Expected Ratio
Northern Plains
 Liver 64 18 46 3.56
 Kidney 143 66 77 2.17
 Lung 551 296 255 1.86
 Stomach 33 17 16 1.94
 Cervical 73 40 33 1.83
 Colorectal 299 177 122 1.69
 Oropharyngeal 58 40 18 1.45
 Total Excess Cancer Cases 567
Alaska
 Stomach 33 8 25 4.13
 Colorectal 216 74 142 2.92
 Oropharyngeal 32 12 20 2.67
 Liver 19 9 10 2.11
 Kidney 54 28 26 1.93
 Cervical 26 16 10 1.63
 Lung 164 105 59 1.56
 Total Excess Cancer Cases 292
Southern Plains
 Liver 88 30 58 2.93
 Stomach 56 24 32 2.33
 Kidney 235 114 121 2.06
 Cervical 118 71 47 1.66
 Pancreas 129 81 48 1.59
 Colorectal 452 286 166 1.58
 Lung 697 467 230 1.49
 Corpus and Uterus, NOS 261 190 71 1.37
 Female Breast 1337 1012 325 1.32
 Ovary 132 99 33 1.33
 Non-Hodgkin Lymphoma I58 122 36 1.30
 Thyroid 207 176 31 1.18
 Total Excess Cancer Cases 1198
Pacific Coast
 Liver 94 32 62 2.94
 Stomach 43 22 21 1.95
 Cervical 105 52 53 2.02
 Colorectal 317 235 82 1.35
 Lung 456 377 79 1.21
 Corpus and Uterus, NOS 253 222 31 1.14
 Total Excess Cancer Cases 328
East
 Liver 22 11 11 2.00
 Stomach 25 12 13 2.08
 Total Excess Cancer Cases 24
Southwest
 Liver 138 40 98 3.45
 Stomach 93 30 63 3.10
 Kidney 208 111 97 1.87
 Corpus and Uterus, NOS 337 272 65 1.24
 Total Excess Cancer Cases 323
a

AI/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)

b

Leading cancers with elevated incidence selected from 15 most common cancers. See Web Table 2

c

Observed counts are the number of cancer cases observed in the dataset

d

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