Experimental studies: Randomized controlled trials – Part I

Authors

  • Pankajakshan Vijayanthi Indu Professor & HOD, Department of Psychiatry, Govt. Medical College, Ernakulam, Kerala. Author
    • Karunakaran Vidhukumar Professor & HOD, Department of Psychiatry, TD Medical College, Alappuzha, Kerala Author

      DOI:

      https://doi.org/10.30834/KJP.35.2.2023.384

      Keywords:

      Experimental research design, randomized controlled trials, types of RCTs

      Abstract

      Experimental research design involves experiments where experimental groups are created, exposed to specific interventions and specific outcomes studied. Randomized controlled trials (RCTs) are true-experimental studies and the most accurate and powerful among experimental study designs. In RCTs, participants are randomly allocated to receive one of several interventions, and the effects of these interventions are studied regarding particular outcomes. The different types of RCTs are discussed.

      References

      Zubair AM. Experimental research design – types & process. Academia Open 2023. Available from: https://www.researchgate.net/publication/367044021

      Indu PV, Vidhukumar K. Research designs – an overview. Kerala Journal of Psychiatry 2019;32:64-7.

      Stanley K. Design of randomized controlled trials. Circulation 2007;115:1164-69.

      Stolberg HO, Norman G, Trop I. Fundamentals of clinical research for radiologists – randomized controlled trials. AJR 2004;183:1539–44.

      Types of randomized controlled trials. In: Jadad AR, Enkin MW, editors. Randomized controlled trials: questions, answers and musings. 2nd Ed. Massachusets: Blackwell publishing; 2007. pp. 12-28.

      Wang B, Wang H, Tu XM, Feng C. Comparisons of superiority, non-inferiority, and equivalence trials. Shanghai Arch Psychiatry 2017;29:385-88.

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      Published

      20-02-2023

      Issue

      Section

      Column: Research Methods in Psychiatry

      How to Cite

      1.
      Experimental studies: Randomized controlled trials – Part I. Kerala Journal of Psychiatry [Internet]. 2023 Feb. 20 [cited 2026 Aug. 18];35(2):155-8. Available from: https://kjponline.com/index.php/kjp/article/view/384

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