Disparities in Colorectal Cancer Incidence among Asian and Pacific Islander Populations in Guam, Hawai’i, and the United States

JaeYong Choi (), Grazyna Badowski, Yurii B. Shvetsov, Louis Dulana, Rodney Teria, Su Bin Jin, Cabrini Aguon, Renata Bordallo and Rachael T. Leon Guerrero
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JaeYong Choi: College of Natural & Applied Sciences, University of Guam, 303 University Drive Mangilao, Mangilao 96923, Guam
Grazyna Badowski: College of Natural & Applied Sciences, University of Guam, 303 University Drive Mangilao, Mangilao 96923, Guam
Yurii B. Shvetsov: University of Hawaii Cancer Center, 701 Ilalo Street Honolulu, Honolulu, HI 96813, USA
Louis Dulana: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam
Rodney Teria: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam
Su Bin Jin: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam
Cabrini Aguon: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam
Renata Bordallo: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam
Rachael T. Leon Guerrero: Cancer Research Center, University of Guam, Dean Circle #7 UOG Station Mangilao, Mangilao 96923, Guam

IJERPH, 2024, vol. 21, issue 2, 1-8

Abstract: Colorectal cancer (CRC) ranks among the three most common cancers in Guam (GU), Hawai’i (HI), and the mainland United States (US). CRC prevalence in these areas is high among Filipinos, and indigenous CHamorus and Native Hawaiians; however, data on these populations are frequently aggregated in epidemiological studies, which can mask true CRC disparities. We examined CRC cumulative incidence rates (CIRs) among CHamorus in GU, Filipinos in GU, HI, and the US, and Native Hawaiians in HI and the US. CRC CIRs were calculated for two age groups (20–49 years; early onset, and 50–79 years; senior) and four time periods (2000–2004, 2005–2009, 2010–2014, and 2015–2019), stratified by ethnicity, sex, and location. Data analyzed included all invasive CRC cases reported to the Surveillance, Epidemiology, and End Results 9-Registry ( n = 166,666), the Hawai’i Tumor Registry ( n = 10,760), and the Guam Cancer Registry ( n = 698) between 2000 and 2019. Senior CIRs were highest in HI and lowest in GU throughout all time periods, with a downward trend observed for senior CIRs in the US and HI, but not GU. This downward trend held true for all ethnic groups, except for CHamorus in GU, females in GU, and females of CHamoru ethnicity in GU. In contrast, early onset CIRs increased across all locations, sexes, and ethnic groups, except for Filipinos in HI and males of Filipino ethnicity in HI. Our findings provide crucial insights for future research and policy development aimed at reducing the burden of CRC among indigenous populations.

Keywords: colorectal cancer; Pacific Islanders; CHamorus; Filipinos; Hawaii; Guam (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2024
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