Alternative Designs for Testing Speech, Language, and Hearing Interventions: Cluster-Randomized Trials and Stepped-Wedge Designs
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| Title: | Alternative Designs for Testing Speech, Language, and Hearing Interventions: Cluster-Randomized Trials and Stepped-Wedge Designs |
|---|---|
| Language: | English |
| Authors: | Patterson, Charity G. (ORCID |
| Source: | Journal of Speech, Language, and Hearing Research. Jul 2022 65(7):2677-2690. |
| Availability: | American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org |
| Peer Reviewed: | Y |
| Page Count: | 14 |
| Publication Date: | 2022 |
| Document Type: | Journal Articles Reports - Descriptive |
| Descriptors: | Speech Language Pathology, Randomized Controlled Trials, Intervention, Speech Therapy, Research Design, Sample Size, Cohort Analysis, Hearing Impairments, Residential Care |
| DOI: | 10.1044/2022_JSLHR-21-00522 |
| ISSN: | 1092-4388 1558-9102 |
| Abstract: | Purpose: Individual-randomized trials are the gold standard for testing the efficacy and effectiveness of drugs, devices, and behavioral interventions. Health care delivery, educational, and programmatic interventions are often complex, involving multiple levels of change and measurement precluding individual randomization for testing. Cluster-randomized trials and cluster-randomized stepped-wedge trials are alternatives where the intervention is allocated at the group level, such as a clinic or a school, and the outcomes are measured at the person level. These designs are introduced along with the statistical implications of similarities among individuals within the same cluster. We also illustrate the parameters that have the most impact on the likelihood of detecting intervention effects, which must be considered when planning these trials. Conclusion: Cluster-randomized and stepped-wedge designs should be considered by researchers as experimental alternatives to individual-randomized trials when testing speech, language, and hearing care interventions in real-world settings. |
| Abstractor: | As Provided |
| Entry Date: | 2022 |
| Accession Number: | EJ1355579 |
| Database: | ERIC |
| Abstract: | Purpose: Individual-randomized trials are the gold standard for testing the efficacy and effectiveness of drugs, devices, and behavioral interventions. Health care delivery, educational, and programmatic interventions are often complex, involving multiple levels of change and measurement precluding individual randomization for testing. Cluster-randomized trials and cluster-randomized stepped-wedge trials are alternatives where the intervention is allocated at the group level, such as a clinic or a school, and the outcomes are measured at the person level. These designs are introduced along with the statistical implications of similarities among individuals within the same cluster. We also illustrate the parameters that have the most impact on the likelihood of detecting intervention effects, which must be considered when planning these trials. Conclusion: Cluster-randomized and stepped-wedge designs should be considered by researchers as experimental alternatives to individual-randomized trials when testing speech, language, and hearing care interventions in real-world settings. |
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| ISSN: | 1092-4388 1558-9102 |
| DOI: | 10.1044/2022_JSLHR-21-00522 |
