We lead the developed world in the incidence of heart disease and cancer.

Others increased significantly in incidence over the last 20 years.

At the same time, there has been a big increase in the incidence of obesity and diabetes.

There is now increasing evidence of both national and regional variation in incidence.

But little reduction in the incidence of mistakes has resulted.

The cancer kills an estimated 40,000 women a year and any decline in incidence can be important.

From the mid 1880s there was a marked increase in the incidence of strikes.

However, researchers have noticed recently an increase in incidence.

A gap in the incidence of prostate cancer has narrowed.

This method assumes, of course, that there is no change in either incidence or survival rates.