Differences in breast cancer mortality worldwide: unsolved problems.

Breast cancer mortality remains a major cause of female mortality. Between 1970 and 2000 both important increases and decreases in breast cancer mortality rates occurred. Large differences in breast cancer mortality exist among countries worldwide.

On the relationship between all-cause, cardiovascular, cancer and residual mortality rates with age.

Background: The existence of a highly significant linear relationship between the natural logarithm (ln) all-cause mortality rate and age at the population level is firmly established (r>0.99). The slope and intercept of the equation, however, vary markedly between populations.