Rollout trial designs in implementation research are often necessary and sometimes preferred

Background Rollout designs, which include stepped wedge designs, are defined by staggered implementation of new or alternative programs or services. Critiques of stepped wedge and other rollout designs have raised concerns regarding the confounding of true implementation or program effects with unre...

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Vydáno v:Implementation science : IS Ročník 20; číslo 1; s. 11 - 12
Hlavní autoři: Simon, Gregory E., Garner, Bryan R., Smith, Justin D., Wyman, Peter A., Matson, Theresa E., Chin-Purcell, Lia, Cero, Ian, Vermeer, Wouter, Johnson, Kimberly A., Prado, Guillermo, Brown, C. Hendricks
Médium: Journal Article
Jazyk:angličtina
Vydáno: London BioMed Central 24.02.2025
BioMed Central Ltd
Springer Nature B.V
BMC
Témata:
Debate
Ethics
Health Administration
Health Informatics
Health Policy
Health Promotion and Disease Prevention
Health services
Health Services Research
Humans
Implementation Science
Medical research
Medicine
Medicine & Public Health
Medicine, Experimental
Methodology
Methods
Pragmatism
Public Health
Research Design
United States
ISSN:1748-5908, 1748-5908
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Shrnutí:Background Rollout designs, which include stepped wedge designs, are defined by staggered implementation of new or alternative programs or services. Critiques of stepped wedge and other rollout designs have raised concerns regarding the confounding of true implementation or program effects with unrelated, global changes in service delivery, with some recommending they only be used when traditional parallel-group designs are not practicable. However, rollout designs may sometimes be more suitable than traditional parallel group designs for ethical, scientific, or practical reasons. Results As investigators involved in several recent rollout trials, we define and provide rationale for and examples of stepped wedge and the larger class of rollout designs, in which all participating units receive a new program or service implementation. Staged implementation in a rollout design may be necessary when denying, rather than delaying, implementation of a known effective service is ethically unacceptable. Scientifically, stepped wedge has increased statistical power relative to an equivalent parallel group design, and some rollout designs have the capability to compare different phases of implementation and sustainment. A rollout design may be practically necessary either because of limited resources and other logistical challenges or community requirements that no site serve as a control. Examples of completed and ongoing rollout trials illustrate how these ethical, scientific, and practical considerations influenced trial designs. Conclusions Stepped wedge and other rollout trial designs may be well suited to evaluation of implementation strategies or policy changes. In implementation trials, rollout designs may be necessary for practical reasons, may be required for ethical reasons, and may be preferred for scientific reasons. We summarize when such rollout designs have advantages and drawbacks.
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ISSN:1748-5908
1748-5908
DOI:10.1186/s13012-025-01422-x