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Randomized Single-Case Intervention Designs and Analyses for Health Sciences Researchers: A Versatile Clinical Trials
Joel R Levin1, Thomas R Kratochwill2
1Emeritus of Educational Psychology, University of Arizona, 3850 E. Placita de Peri, Tucson, AZ, 85718, USA. jrlevin@u.arizona.edu.
Aim:
An expository note introduces health sciences researchers to randomized single-case intervention designs, an adaptation of interrupted time-series methodology, and the staple of a scientifically credible small-sample research paradigm.
Methods:
Detailed examples illustrating two different randomized single-case procedures are presented to highlight the techniques' advantages relative to small-sample nonparametric procedures that are commonly applied in the medical and health sciences fields.
Results:
Numerous positive outcomes, based on both statistical simulation studies and actual intervention research investigations, support the applicability and value of these procedures.
Conclusion:
Randomized single-case intervention designs are recommended for consideration by health sciences researchers.
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