For those with no E4, the average age of onset was 84.

Knowing the age of onset can be very helpful, too.

The average age of onset is in a persons teenage years.

The age of onset is usually between 10 and 30.

The age of onset is 20 to 50 years old.

It has a peak age of onset between 30 and 60.

It also tends to have an earlier age of onset than depression.

The age of onset is often between 3 and 5 years.

The average age of onset is between 25 and 50 with most cases occurring when people are in their 20s or 30s.

And still other studies have concluded that age of onset has no affect on the progress.