Nerd_Bunny wrote:So at my state tournament, (Idaho,) my partner and I got a question that neither one of us knew. The first part asked what the sensitivity was, and the second part I can't remember. So my question is, what other term could it have been asking for? I think it started with an 's' as well, but I'm not sure. Looking through my textbook glossary, I think it could have been severity, but I'm not sure. If anyone could help me out here, it would be much appreciated. Thanks!
It's been a while since I've done Disease Detectives but I think I can help you.
Sensitivity is basically the chance of having a specific disease given that you have a disease. It can be calculated as:
Sensitivity = Number of disease positives testing positive / Number of people with a disease who test positive for a particular disease + number of people with a disease who test negative.
Conversely, another term closely related is specificity
(is this the word that you couldn't remember?) This is basically the reciprocal idea, but I think it is more of an emphasis on not having a disease and also testing negative.
Specificity = number of people who test negative and don't have a disease / number of people who test negative and don't have a disease + number of people who don't have a disease but test positive
Gosh-- I'm surprised that the Idaho competition even got that difficult. For the past few years the Disease Detectives test has been fairly easy at state (or if you were there in 2016 it had literally nothing to do with the event)
Hope this helps, and if you have any other questions, feel free to PM me.