Continuous and Binary Endpoints

Outcomes are either continuous or dichotomous.

When determining  if a clinical trial is effective we test a hypothesis on a primary outcome, and we may have several secondary outcomes. We can't define many outcomes and pick the most successful, it would be like rolling dice many times; It increases the chance of type 1 error (rejecting the null hypothesis when it is true). One could also adjust the p-value to account for multiple testing.