You are looking at  1-1 of 1 chapters  for:

  • 19.2.5 Nonrandomized Trials. x
Clear All


Nonrandomized Trials.  

Edward H. Livingston

in AMA Manual of Style: A Guide for Authors and Editors (11 ed.)

Print Publication Year: 
Feb 2020
Published Online: 
Feb 2020
Item type: 
A nonrandomized trial prospectively assigns groups or populations to study the efficacy or effectiveness of an intervention but the assignment to the intervention occurs through self-selection or administrator selection rather than through randomization. Control groups can be historical, concurrent, or both. This design is sometimes called a quasi-experimental design. Reports of these trials should follow the Transparent Reporting of Evaluations With Nonrandomized Designs (TREND) reporting guideline (...