It is the seventh most reported cancer in the United States for white men and women. In Wyoming, it is the fifth most reported cancer in the state for men and the seventh most reported for women. The national average annual incidence rate for 1991-1995 was 12.7 per 100,000. The Wyoming Cancer Surveillance Program gathers data on Wyoming residents diagnosed and treated for invasive and in situ tumors. The data is sent to the program ' s registry by every hospital in the state.
Data also is collected from clinics and physician offices throughout the state.
Incidence rates presented are per 100,000 persons are age-adjusted to the 1970 US standard population. Age-adjustment allows rates from one geographic area to be compared with rates from other geographic areas. A confidence interval is a way of telling how confident we are in the accuracy of a cancer rate. For example, we will often say that the rate of cancer in an area is 130 per 100,000, and that the confidence interval is 120 to 140 per 100,000. Rater were not calculated for countries with 5 or fewer events.