IMPACT - Cancer Incidence

RESULTS

Male incidence rates were 2.5 times those of females.
African-American males had the highest incidence rates, followed by White males. Hispanic females had substantially lower rates than any other group.
Rates increased with age in both males and females of all racial/ethnic groups, peaking between ages 65 and 75 years.

Females had lower colon cancer incidence rates than did males.
African-American and White males had the highest colon cancer rates. Hispanics of both sexes had the lowest rates.
Incidence rates increased steadily with age across all racial/ethnic groups.

White females had the highest breast cancer incidence rate 25 percent greater than that of African-American females and 60 percent greater than Hispanic females.
Incidence increased with age across all racial/ethnic groups; the largest differences among racial/ethnic groups were seen for women age 50 years and older.

African-American males experienced slightly higher rates of prostate cancer than did White males. African-American and White males had substantially higher rates (81 percent and 70 percent, respectively) than did Hispanic males.
Age is the strongest risk factor for prostate cancer, as reflected in the graph of age-specific incidence. Rates began to climb in all racial/ethnic groups after age 45 and increased sharply through age 75.

Hispanic women had a rate of cervical cancer 1.9 times that of White women and 1.4 times the rate of African-American women.
Cervical cancer incidence for all three groups increased at a similar rate until age 35. Rates in Hispanics continued to climb after age 35, while rates in Whites leveled off. Rates in African-Americans were intermediary between the two. Note that African-American rates are unstable because the numbers of cases are small.
A womanšs chance of surviving cervical cancer is much greater if the cancer is diagnosed at the in situ rather than the invasive stage of disease. Older Texas women (ages 55 and over) were more likely to have cervical cancer diagnosed at the invasive stage (67 percent to 75 percent) than were younger Texas women of ages 15 to 34 (10 percent to 20 percent). At all ages, more Hispanic and African-American women were diagnosed with disease at the invasive stage than were White women.

Whites of both sexes had six to seven times higher incidence rates of melanoma of the skin than Hispanics did. Too few cases of melanoma were reported in African-Americans to calculate a stable rate for that group.
While White males had higher incidence rates than White females, Hispanic males and females had similar rates.
Among Texas Whites under the age of 45, skin melanoma incidence rates for both males and females increased with age at a similar rate. After age 45, incidence rates among females increased only slightly, while rates in males increased dramatically.