In calculating percentages after 1996 data, missing and unknown values were excluded. Oregon Health Division, Center for Health Statistics. Percentages based on less than five events may be unreliable. In calculating percentages after 1996 data, missing and unknown values were excluded. Oregon Health Division, Center for Health Statistics.
Percentages based on less than five events are unreliable.
In calculating percentages missing and unknown values were excluded. Oregon Health Division, Center for Health Statistics.