Type I and Type II Error

 Hypothesis 

    Proposition that serves as a starting point for further investigation.


   Null Hypothesis

    Assumption that any differences between groups in your study occurred purely by a chance.


    How to set a clinical trial ?

    Identify a problem.

    Ask a scientific question - define null hypothesis to test. 

    Design a study.

            define population

            methodology of study

            power analysis

            define outcome measures

     Ethical approval

     Register trial and conduct

      Recruit patient

       Analyze results

       Interpret the findings.

Type I error or alpha error

        A null hypothesis that is true is falsely rejected or p-value suggests there is significant difference             when there is not.

   Type II or Beta Error

        confirms an idea that should have been rejected (failing to reject the null hypothesis)

Comments

Popular posts from this blog

Outline of Treatment of Spinal Tuberculosis

COXA VARA

Paediatric Supracondylar Humerus Fracture

Hind Foot amputation

Timing and Outcome of Surgery in Hip Fractures