Basic epidemiology help please
March 26, 2010 2:25 PM Subscribe
In epidemiology and/or medicine, is it called the "positivity rate" or the "positive rate"? Is one (i.e., "positive rate") a preferred term for laypersons? Also how do you calculate this rate? I've seen it done several different ways. Could you provide references to authoritative sources that define it?
posted by anonymous to Science & Nature (3 answers total) 2 users marked this as a favorite
For disease screening, the positivity rate/positive rate tells you what percentage of people have tested positive for a disease, but what is considered the correct denominator? Is it:
1. number of people submitting to a test
2. positive results + negative results
3. number of adequately completed tests (but including indeterminate results)
I would be interested in sources recommending proper use and wording for both expert and lay audiences.
(Would rather not link this question to my posting history. Thx.)