Browsing by Author "Singh, Sonal"

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    Chapter 7: grading a body of evidence on diagnostic tests.
    (Journal of general internal medicine, 2012-06) Singh, Sonal; Chang, Stephanie M; Matchar, David B; Bass, Eric B

    Introduction

    Grading the strength of a body of diagnostic test evidence involves challenges over and above those related to grading the evidence from health care intervention studies. This chapter identifies challenges and outlines principles for grading the body of evidence related to diagnostic test performance.

    Challenges

    Diagnostic test evidence is challenging to grade because standard tools for grading evidence were designed for questions about treatment rather than diagnostic testing; and the clinical usefulness of a diagnostic test depends on multiple links in a chain of evidence connecting the performance of a test to changes in clinical outcomes.

    Principles

    Reviewers grading the strength of a body of evidence on diagnostic tests should consider the principle domains of risk of bias, directness, consistency, and precision, as well as publication bias, dose response association, plausible unmeasured confounders that would decrease an effect, and strength of association, similar to what is done to grade evidence on treatment interventions. Given that most evidence regarding the clinical value of diagnostic tests is indirect, an analytic framework must be developed to clarify the key questions, and strength of evidence for each link in that framework should be graded separately. However if reviewers choose to combine domains into a single grade of evidence, they should explain their rationale for a particular summary grade and the relevant domains that were weighed in assigning the summary grade.
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    Correction to: Integrating multiple data sources (MUDS) for meta-analysis to improve patient-centered outcomes research: a protocol for a systematic review.
    (Alzheimer's research & therapy, 2018-02-16) Mayo-Wilson, Evan; Hutfless, Susan; Li, Tianjing; Gresham, Gillian; Fusco, Nicole; Ehmsen, Jeffrey; Heyward, James; Vedula, Swaroop; Lock, Diana; Haythornthwaite, Jennifer; Payne, Jennifer L; Cowley, Theresa; Tolbert, Elizabeth; Rosman, Lori; Twose, Claire; Stuart, Elizabeth A; Hong, Hwanhee; Doshi, Peter; Suarez-Cuervo, Catalina; Singh, Sonal; Dickersin, Kay
    CORRECTION:The correct title of the article [1] should be "Integrating multiple data sources (MUDS) for meta-analysis to improve patient-centered outcomes research: a protocol". The article is a protocol for a methodological study, not a systematic review.