Breast cancer was by far the most common cancer, accounting for 31% of female cancers.
The crude incidence rate was 139, with an apparent slight increase during the 1988-1992 period.
The incidence rate increased with age (as shown in the figure) starting with the 40-44 years age class.
Lifetime risk (0-74 yr.) of developing breast cancer was 1 in 14.
In 1992, 139 women died from breast cancer with a mortality/incidence ratio of 0.32.
The crude mortality rate was 44.7; the mortality rate gradually increased with age and resulted higher after 70 years, as shown in the figure.
The observed and relative 5-year survival for breast cancer was 70% and 78%, respectively.
A relationship between survival and stage was also investigated in a sample of 264 women.
The five year observed survival was 86%, 81%, 66%, 50%, 38%, 4% for women with stage I, IIA, IIB, IIIA, IIIB, IV, respectively.
| Breast cancer. Observed and relative survival, years 1988-1991. | Breast cancer. Survival by stage, years 1988-1991. |
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