The other sides of the King
Types of clinical trials. Variations of the classic parallel clinical trial design are described, such as crossover, sequential, or factorial clinical trials.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Epidemiology
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.
All that glitters is not gold
Assessment of diagnostic tests. We describe how to assess the power of diagnostic tests: sensitivity, specificity, predictive values, and likelihood ratios.
The one with the foreign name
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.
Do they not trick you with cheese
Association measures. The measures of association are described and how it is preferable to use absolute measures of impact over relative ones.