Nonrandomized Controlled Trial, or Pretest-Posttest Study with a Control Group

A study type that assigns participants to treatment conditions but does not use random assignment and is not as rigorous as a Randomized Controlled Trial. Standardized assessment measures are administered at intake and post-intervention to monitor symptom improvement and determine outcomes. The study may administer measures at established time points during and after treatment to determine the long-term effects of the intervention. Treatment outcomes for the intervention group(s) are evaluated to determine if the intervention was more effective than services as usual.