Statistical questions on the electronic cigarettes trial

Landow L. Current issues in clinical trial design: superiority

versus equivalency studies. Anesthesiology 2000;6(92):

–1820.

U.S. Department of Health and Human Services Food and Drug

Administration. Non-Inferiority Clinical Trials to Establish

Effectiveness—Guidance for Industry. https://www.fda.gov/

downloads/Drugs/Guidances/UCM202140.pdf (lase accessed:

Jan. 7, 2018).

Yang S and Berdine G. (2017) Non-inferiority trails. The

Southwest Respiratory and Critical Care Chronicles, 5(21):50–

DOI: 10.12746/swrccc.v5i21.424.