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Aloe, Ariel M., Becker, Betsy Jane, Duvendack, Maren 
ORCID: https://orcid.org/0000-0002-8125-9115, Valentine, Jeffrey C, Shemilt, Ian and Waddington, Hugh
(2017)
Quasi-experimental study designs series –Paper 9: Collecting data from quasi-experimental studies.
Journal of Clinical Epidemiology, 89.
pp. 77-83.
ISSN 0895-4356
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Abstract
Objective: To identify variables that must be coded when synthesizing primary studies that use quasi-experimental designs. Study Design and Setting: All quasi-experimental (QE) designs. Results: When designing a systematic review of QE studies potential sources of heterogeneity – both theory-based and methodological – must be identified. We outline key components of inclusion criteria for syntheses of quasi-experimental studies. We provide recommendations for coding content-relevant and methodological variables, and outlined the distinction between bivariate effect sizes and partial (i.e., adjusted) effect sizes. Designs used and controls employed are viewed as of greatest importance. Potential sources of bias and confounding are also addressed. Conclusion: Careful consideration must be given to inclusion criteria and the coding of theoretical and methodological variables during the design phase of a synthesis of quasi-experimental studies. The success of the meta-regression analysis relies on the data available to the meta-analyst. Omission of critical moderator variables (i.e., effect modifiers) will undermine the conclusions of a meta-analysis.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | meta-analysis,quasi-experiment,bivariate effect size,partial effect size,moderator variables,effect modifiers |
| Faculty \ School: | Faculty of Social Sciences > School of Global Development (formerly School of International Development) |
| UEA Research Groups: | Faculty of Social Sciences > Research Groups > Gender and Development Faculty of Social Sciences > Research Groups > Impact Evaluation |
| Related URLs: | |
| Depositing User: | Pure Connector |
| Date Deposited: | 06 Apr 2017 06:58 |
| Last Modified: | 27 Mar 2024 17:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/63169 |
| DOI: | 10.1016/j.jclinepi.2017.02.013 |
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