To see well you must be blind
Blinding. Masking or blinding is a concealment technique that prevents the existence of information biases.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreTo see well you must be blind
The sun is not hurried by early risers
Preventive trials biases. Preventive trials require more time to be performed because participants are healthy people, so they are at risk of specific biases.
The curse
Regression to the mean. Regression to the mean explains that, after an extreme value of a variable, the next time we will obtain a value closer to the mean.
The why and wherefores
Calculating expected values. Calculating expected values is done by multiplying the marginals of the cell and dividing by the total of the table. This rule is reasoned.
Studying or working?
Chi-square test for independence. Chi-square test for independence compares the proportions of two qualitative variables to determine whether or not they are independent.