About pilots
Pilot studies. Pilot studies are carried out before the conventional trial in order to ensure the effect of the intervention and the feasibility of the study.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreAbout pilots
A never-ending story
Diagnostic odds ratio. Diagnostic odds ratio is an easy-to-interpret diagnostic test marker that does not depend on the prevalence of the disease.
The fragility of the EmPress
Fragility index. Fragility index describes the minimum number of participants whose status has to change for p to go from being statistically significant to not being so.
All roads lead to Rome
Comparison of proportions. We review the methods for comparison of proportions: chi-square, Fisher’s exact test and approximation to a normal. This expression has its origin in the crazy habit that came to Romans for making roads connecting the capital of the…
Brown or blond, all bald
Comparisson of variables. We describe the statistical tests that should be used for comparisson of variables of different kinds.