Dr. Alex Jimenez, El Paso's Chiropractor
I hope you have enjoyed our blog posts on various health, nutritional and injury related topics. Please don't hesitate in calling us or myself if you have questions when the need to seek care arises. Call the office or myself. Office 915-850-0900 - Cell 915-540-8444 Great Regards. Dr. J
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Randomized Controlled Trial

Randomized Controlled Trialor (RCT) design randomly assigns participants into an experimental group or a control group. As the study is conducted, the only expected difference between the control and experimental groups in a randomized controlled trial (RCT) is the outcome variable being studied.

Randomized Controlled Trial

In this type of study participants are divided by chance into separate groups that compare differenttreatmentsor otherinterventions. Using chance to divide people into groups means that the groups will be similar and that the effects of the treatments they receive can be compared more fairly. At the time of the trial, it is not known whichtreatmentis best.


  • Easier to blind/mask than from observational studies
  • Good randomization which washes out any population bias
  • Populations of participating individuals are clearly identified
  • Results can be analyzed with well known statistical tools


  • Does not reveal causation
  • Expensive in time and money
  • Loss to follow-up attributed to treatment
  • Volunteer biases: the population that participates may not be representative of the whole

For Answers to any questions you may have please call Dr. Jimenez at 915-850-0900