Cited by 80Statistical Methods in Clinical TrialsHealth Policy Implementation ScienceAdvanced Causal Inference Techniques

Comparison of a phased experimental approach and a single randomized clinical trial for developing multicomponent behavioral interventions

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Collins, Linda M, Chakraborty, Bibhas, Murphy, Susan A, Strecher, Victor·2009·Clinical Trials

Abstract

Background Many interventions in today's health sciences are multicomponent, and often one or more of the components are behavioral. Two approaches to building behavioral interventions empirically can be identified. The more typically used approach, labeled here the classical approach, consists of constructing a likely best intervention a priori, and then evaluating the intervention in a standard randomized controlled trial (RCT). By contrast, the emergent phased experimental approach involves programmatic phases of empirical research and discovery aimed at identifying individual intervention component effects and the best combination of components and levels. Purpose The purpose of this article is to provide a head-to-head comparison between the classical and phased experimental approaches and thereby highlight the relative advantages and disadvantages of these approaches when they are used to select program components and levels so as to arrive at the most potent intervention. Methods A computer simulation was performed in which the classical and phased experimental approaches to intervention development were applied to the same randomly generated data. Results The phased experimental approach resulted in better mean intervention outcomes when the intervention effect size was medium or large, whereas the classical approach resulted in better mean intervention outcomes when the effect size was small. The phased experimental approach led to identification of the correct set of intervention components and levels at a higher rate than the classical approach across all conditions. Limitations Some potentially important factors were not varied in the simulation, for example the underlying structural model and the number of intervention components. Conclusions The phased experimental approach merits serious consideration, because it has the potential to enable intervention scientists to develop more efficacious behavioral interventions. Clinical Trials 2009; 6: 5—15. http://ctj.sagepub.com

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Authors
Collins, L. M., Chakraborty, B., Murphy, S. A., & Strecher, V.
Affiliations
  • Pennsylvania State University (US)
  • University of Michigan (US)
Corresponding author
Collins, Linda M
Venue
Clinical Trials
Published
2009-02
Volume
6
Issue
1
Pages
5-15
ISSN
  • 1740-7745 (ISSN-L)
  • 1740-7753
OpenAlex
W1985553578
Cited by
80
References
45
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 2 · 2022: 10 · 2021: 2 · 2020: 13 · 2019: 3 · 2018: 7 · 2017: 3 · 2016: 4 · 2015: 4 · 2014: 9 · 2013: 7 · 2012: 4
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Clinical Trials (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Drug Abuse (K05DA018206, P50DA010075)
Topics
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Clinical Trials
  • Health Sciences › Health Professions › General Health Professions › Health Policy Implementation Science
  • Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
Keywords
intervention development, randomized controlled trials, intervention levels, computer simulation, intervention efficacy, effect size
MeSH terms
Behavior Therapy, Humans, Research Design, Effect Modifier, Epidemiologic, Randomized Controlled Trials as Topic, Sample Size

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