Note: Monograph chapters used a combined bibliography. See original volume for references.

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The decline was highest for American Indians (from 24.7 to 13.3 per 100,000) followed by Hispanics (from 21.4 to 12.9 per 100,000) and NHW (from 7.9 to 5.2 per 100,000). For each of the ethnic groups, age-adjusted incidence rates were higher in males than females. The greatest decline in age-adjusted incidence rates was seen in American Indian males (from 34.3 to 16.5 per 100,000). The age-specific incidence rates decreased over time among all groups, with the exception of American Indian females aged 50-59 (from 4.1 to 15.9 per 100,000) and 60-69 (from 17.5 to 29.7 per 100,000). The incidence of gastric cancer increased with age for each of the ethnic groups. The intestinal type of gastric cancer was more common than the diffuse type. The percentage of intestinal-type gastric cancers declined over time, while the percentage of diffuse-type gastric cancers increased, irrespective of ethnic group or gender. The intestinal type was more common in males than females for each of the ethnic groups. Conclusions: Gastric cancer incidence rates have steadily declined among New Mexico's three major ethnic groups over the past 28 years. The greatest rate of decline has been observed within the American Indian population, particularly the males.The percentage of diffuse-type gastric cancers has progressively increased, while the percentage of intestinal-type gastric cancers has progressively decreased.

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