
Prevention not always is better
Disadvantages of screening. Before starting a screening program, we must carefully plan the strategy and identify its advantages and disadvantages.

Evidence Based Medicine pills

Evidence Based Medicine pills

Disadvantages of screening. Before starting a screening program, we must carefully plan the strategy and identify its advantages and disadvantages.

Assessment of diagnostic tests. We describe how to assess the power of diagnostic tests: sensitivity, specificity, predictive values, and likelihood ratios.

Odds ratio. The odds ratio allows us to calculate the strength of the association between exposure and effect when we do not know the baseline risks.

Association measures. The measures of association are described and how it is preferable to use absolute measures of impact over relative ones.