At age 35, your cumulative risk of getting breast cancer by age 55 is 2.5 percent.

But the cumulative risk of dying from the disease is 0.56 percent.

One population study found the cumulative risk of haemorrhage to be 10% in males and 20% in females.

The cumulative risk for endometrial cancer in women was 71% at age 70 years.

The combined cumulative risk of adenoma or cancer by age 60 years was 81.8% in men and 62.9% in women.

At that point the cumulative risk of the group was about one-half of 1 percent.

The proportion developing the disease rose with age, and by the time survivors were 86 years old the cumulative risk had reached almost 46 percent.

It is estimated that the additional radiation will increase a person's cumulative risk of getting cancer by age 75 by 0.6-1.8%.

So we're still faced with the mathematics of cumulative risk.

In the United States, the cumulative risk for a woman of being diagnosed with breast cancer by age 90 years is one in eight.