Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses

Objectives Within cost-effectiveness models, prevalence figures can inform transition probabilities. The methodological quality of studies can inform the choice of prevalence figures but no single obvious candidate tool exists for assessing quality of the observational epidemiological studies for se...

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Main Authors: Jane E Harding, Richard Edlin, Matthew J Glasgow
Format: Article
Language:English
Published: BMJ Publishing Group 2020-09-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/10/9/e037324.full
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author Jane E Harding
Richard Edlin
Matthew J Glasgow
author_facet Jane E Harding
Richard Edlin
Matthew J Glasgow
author_sort Jane E Harding
collection DOAJ
description Objectives Within cost-effectiveness models, prevalence figures can inform transition probabilities. The methodological quality of studies can inform the choice of prevalence figures but no single obvious candidate tool exists for assessing quality of the observational epidemiological studies for selecting prevalence estimates. We aimed to compare different tools to assess the risk of bias of studies reporting prevalence, and develop and compare possible numerical scoring systems using these tools to set a threshold for inclusion of reports of prevalence in an economic analysis of neonatal hypoglycaemia.Design Assessments of bias using two tools (Joanna Briggs Institute (JBI) Checklist for Prevalence Studies and a modified version of Risk Of Bias In Non-randomised Studies-of Interventions (ROBINS-I)) were compared for 18 studies relevant to a single setting (neonatal hypoglycaemia). Inclusions of studies for use in a decision analysis model were considered based on summary scores derived from these tools.Results Both tools were considered easy to use and produced dispersed scores for each of the 40 study–outcome combinations. The modified ROBINS-I scores were more skewed than the JBI scores, particularly at higher thresholds. The studies selected for inclusion are generally the same using either tool; if 50% was used as the cut-off threshold using the Applicable Score both tools would yield the same results. However, the JBI tool is shorter and may be easier to interpret and apply to studies that do not involve a control group, while the modified ROBINS-I tool assesses more methodological detail in studies that include a control group.Conclusion Both tools performed well for systematically assessing studies that report on outcome prevalence and provided similar discrimination between studies for risk of bias. This convergent validity supports use of both tools for the purpose of assessing risk of bias and selecting studies that report prevalence for inclusion in economic analyses.
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spelling doaj-art-45f14056c6914c7789f42ae16cf43f522025-01-08T20:10:09ZengBMJ Publishing GroupBMJ Open2044-60552020-09-0110910.1136/bmjopen-2020-037324Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analysesJane E Harding0Richard Edlin1Matthew J Glasgow21 Liggins Institute, University of Auckland, Auckland, New ZealandHealth Systems, School of Population Health, University of Auckland, Auckland, New ZealandLiggins Institute, The University of Auckland, Auckland, New ZealandObjectives Within cost-effectiveness models, prevalence figures can inform transition probabilities. The methodological quality of studies can inform the choice of prevalence figures but no single obvious candidate tool exists for assessing quality of the observational epidemiological studies for selecting prevalence estimates. We aimed to compare different tools to assess the risk of bias of studies reporting prevalence, and develop and compare possible numerical scoring systems using these tools to set a threshold for inclusion of reports of prevalence in an economic analysis of neonatal hypoglycaemia.Design Assessments of bias using two tools (Joanna Briggs Institute (JBI) Checklist for Prevalence Studies and a modified version of Risk Of Bias In Non-randomised Studies-of Interventions (ROBINS-I)) were compared for 18 studies relevant to a single setting (neonatal hypoglycaemia). Inclusions of studies for use in a decision analysis model were considered based on summary scores derived from these tools.Results Both tools were considered easy to use and produced dispersed scores for each of the 40 study–outcome combinations. The modified ROBINS-I scores were more skewed than the JBI scores, particularly at higher thresholds. The studies selected for inclusion are generally the same using either tool; if 50% was used as the cut-off threshold using the Applicable Score both tools would yield the same results. However, the JBI tool is shorter and may be easier to interpret and apply to studies that do not involve a control group, while the modified ROBINS-I tool assesses more methodological detail in studies that include a control group.Conclusion Both tools performed well for systematically assessing studies that report on outcome prevalence and provided similar discrimination between studies for risk of bias. This convergent validity supports use of both tools for the purpose of assessing risk of bias and selecting studies that report prevalence for inclusion in economic analyses.https://bmjopen.bmj.com/content/10/9/e037324.full
spellingShingle Jane E Harding
Richard Edlin
Matthew J Glasgow
Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
BMJ Open
title Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
title_full Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
title_fullStr Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
title_full_unstemmed Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
title_short Comparison of risk-of-bias assessment approaches for selection of studies reporting prevalence for economic analyses
title_sort comparison of risk of bias assessment approaches for selection of studies reporting prevalence for economic analyses
url https://bmjopen.bmj.com/content/10/9/e037324.full
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