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J Cancer Epidemiol. 2014;2014:239619. doi: 10.1155/2014/239619. Epub 2014 Jan 2.

Colorectal cancer incidence and mortality disparities in new Mexico.

Author information

1
Department of Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA ; Medicine Service, New Mexico VA Health Care System, 1501 San Pedro Drive SE, Albuquerque, NM 87108, USA ; University of New Mexico Cancer Center, Albuquerque, NM 87106, USA ; Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.
2
Division of Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA.
3
University of New Mexico Cancer Center, Albuquerque, NM 87106, USA ; Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.
4
Department of Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA ; University of New Mexico Cancer Center, Albuquerque, NM 87106, USA.
5
University of New Mexico Cancer Center, Albuquerque, NM 87106, USA ; Department of Surgery, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.
6
Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.

Abstract

BACKGROUND:

Previous analyses indicated that New Mexican Hispanics and American Indians (AI) did not experience the declining colorectal cancer (CRC) incidence and mortality rates observed among non-Hispanic whites (NHW). We evaluated more recent data to determine whether racial/ethnic differences persisted.

METHODS:

We used New Mexico Surveillance Epidemiology and End Results data from 1995 to 2009 to calculate age-specific incidence rates and age-adjusted incidence rates overall and by tumor stage. We calculated mortality rates using National Center for Health Statistics' data. We used joinpoint regression to determine annual percentage change (APC) in age-adjusted incidence rates. Analyses were stratified by race/ethnicity and gender.

RESULTS:

Incidence rates continued declining in NHW (APC -1.45% men, -1.06% women), while nonsignificantly increasing for AI (1.67% men, 1.26% women) and Hispanic women (0.24%). The APC initially increased in Hispanic men through 2001 (3.33%, P = 0.06), before declining (-3.10%, P = 0.003). Incidence rates declined in NHW and Hispanics aged 75 and older. Incidence rates for distant-stage cancer remained stable for all groups. Mortality rates declined significantly in NHW and Hispanics.

CONCLUSIONS:

Racial/ethnic disparities in CRC persist in New Mexico. Incidence differences could be related to risk factors or access to screening; mortality differences could be due to patterns of care for screening or treatment.

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