Talk:Incidence (epidemiology)

Reference Links
All of the links I tried in the reference section gave me 404 errors. The first two, to Dorlands Medical Dictionary, go to the Wayback Machine, but the page is not found. The page the wayback machine references in on MerckSource. The link to the article "Quantifying Diseases in populations" goes to the BMJ Group site but it also says page not found.

So references 1, 2 and 4 don't exist (and 3 and 5 don't have have an online source).

Jscottg (talk) 20:59, 12 July 2013 (UTC)

Where
Where no time interval is given "The incidence is 3 per 10,000" does this mean per annum?

Who knows?


 * I believe that is correct--Bakerstmd 15:58, 27 May 2007 (UTC)

Incorrect definition?
Is the present definition of this epidemiological term really correct? From what I know epidemiological incidence should be defined as: (The number of cases in a population during a certain period of time) divided with (The sum of time for all individuals where these individuals are at risk to develop the disease). My point is that Incidence is distinct from Cumulative incidence. / 80.217.232.217 13:07, 6 January 2007 (UTC)


 * You're right, the article was quite bogus. I fixed it just now. Eubulides 07:28, 28 May 2007 (UTC)


 * Could "risk" in the first sentence be changed to "probability"? I clicked over from Demographics_of_sexual_orientation, and probability seems more value-neutral. ADyuaa (talk) 11:36, 4 July 2008 (UTC)

Prevalence = Incidence x Duration ?
The article states that:


 * Prevalence is approximately the multiple of disease incidence and average disease duration, so Prevalence = Incidence x Duration

Is this actually correct? It doesn't consider deaths (or even recoveries and moving). For example, if a hypothetical disease kills you instantly, its prevalence would tend to zero, even if incidence is high. As a matter of fact, isn't Incidence x Duration called cumulative incidence? Joseph449008 (talk) 20:50, 10 May 2010 (UTC)

What about repeated cases
The example specifically uses HIV, which you can't get twice. But what about something you can catch multiple times. Is the incidence the number of people per who have at least one case? It feel like it is because of phrases like "lifetime incidence of depression". I suppose another way of asking this is can incidence go over 100%? — Preceding unsigned comment added by 79.141.43.130 (talk) 15:50, 6 March 2020 (UTC)