Figure 1:

Gastric cancer incidence rates^a and rate ratios by stage of diagnosis, sex, and Indian Health Service region for American Indian/Alaska Native^b and white populations in PRCDA counties, 2005–2016.

Figure 1 contains two bar separate bar graphs, one for male and one for females. Each show gastric cancer incidence rates for AI/AN compared to white populations by stage of disease and Indian Health service region for those regions that are Purchased/Referred Care Delivery Area (PRCDA) counties. The figures also show the AI/AN versus white rate ratio.

^aRates are per 100,000 and age-adjusted to the 2000 US Std Population (19 age groups-Census P25–1130) standard; Confidence Intervals (Tiwari model) are 95% for rates and ratios

^b AI/AN race is reported by NPCR and SEER registries or through linkage with the IHS patient registration database. The updated bridged intercensal population estimates significantly overestimate AI/AN populations of Hispanic origin. All analyses are limited to non-Hispanic AI/AN populations. Non-Hispanic White was chosen as the reference population. The term “non-Hispanic” is omitted when discussing both groups

^c The rate ratio indicates that the AI/AN rate is significantly different than the rate for whites (P<0.05). Rates are per 100,000 and age-adjusted to the 2000 US Std Population (19 age groups-Census P25–1130) standard; Confidence Intervals (Tiwari model) are 95% for rates and ratios

Localized: Disease restricted to the stomach

Regional: Disease extended into organ and areas adjacent to the stomach.

Distant: Disease metastasized to portions of the body not adjacent to the stomach

Unstaged: Diagnosis could not be determined