The high occurrence of this condition in medical clinics has been confirmed.

A higher occurrence is reported in people with irregular sleep schedules.

Aurora A dysregulation has been associated with high occurrence of cancer.

How can we then account for the high occurrence of subject searches on online catalogues?

There is an extremely high occurrence of periods with extreme drought.

There is a very high occurrence of periods with extreme drought.

This is also associated with a high occurrence of spousal abuse.

South Africa also has the highest occurrence of rape in the world.

There was a high occurrence of jamming during the test.

Malawi has the highest occurrence of child labor in southern Africa.