# Test Yourself

## True or False

#### Feedback

**True**

**The statistical analysis needs to be explicitly stated before a trial can be granted ethical approval. There are many reasons why such as to ensure the trial has been adequately powered, to prevent spurious sub-group analysis and post-hoc comparisons, to help prevent erroneous analytical methods and hence invalid statistical inference.**

#### Feedback

**False**

**The whole point of performing a trial is to make it fair, so at the point of randomisation each participant has the same chance of being in a particular arm of the trial as any other participant.**

#### Feedback

**False**

#### Feedback

**True**

#### Feedback

**True**

#### Feedback

**True**

#### Feedback

**True**