the parameters of sensitivity and specificity are used for assessing?

1. criterion validity

2. construct validity

3. discriminant validity

4. content validity

and while your at it... here is another question.... just a random one.

calculation of a sample size for a prevalence study all of the following are necessary except..

1. prevalence of the disease in population

2. power of the study

3. significance level

4. desired precision

:notsure::notsure::notsure: