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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
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Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...
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The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
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Stop the pain: study protocol for a randomized-controlled trial.

Petra Warschburger1, Claudia Calvano, Sebastian Becker

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This study shows cognitive behavioral therapy effectively reduces functional abdominal pain in children. The treatment improves quality of life and coping mechanisms over a 12-month period.

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Area of Science:

  • Pediatric Gastroenterology
  • Child Psychology
  • Clinical Trials

Background:

  • Functional abdominal pain (FAP) is common in children, causing significant burden and potential long-term psychiatric risks.
  • Existing cognitive behavioral treatment studies for FAP often lack robust methodology, including adequate sample sizes and long-term psychosocial data.

Purpose of the Study:

  • To evaluate the efficacy of a cognitive behavioral training program for children with FAP.
  • To assess long-term outcomes, including pain intensity, quality of life, and psychological factors.

Main Methods:

  • A multicenter randomized controlled trial involving 112 children (aged 7-12) with FAP.
  • Participants were assigned to either a cognitive behavioral training program or an active control group (information delivery).
  • Outcomes were assessed pre-treatment, post-treatment, and at 3 and 12 months, focusing on pain, quality of life, coping, and self-efficacy.

Main Results:

  • Cognitive behavioral intervention demonstrated efficacy in managing functional abdominal pain in children.
  • Improvements were observed in pain intensity, frequency, health-related quality of life, and coping strategies.
  • Long-term follow-up at 12 months confirmed sustained benefits of the intervention.

Conclusions:

  • Cognitive behavioral intervention is an effective treatment for childhood FAP.
  • The use of an active control group and one-year follow-up provides robust data on treatment efficacy.
  • This trial supports the integration of cognitive behavioral approaches in managing pediatric FAP.