Handling of rescue and missing data affects synthesis and interpretation of evidence: The sodium-glucose cotransporter 2 inhibitor example

Catharine B. Stack, A. Russell Localio, Michael E. Griswold, Steven N. Goodman, Cynthia D. Mulrow

Research output: Contribution to journalArticle

Abstract

Confidence in evidence summarized in meta-analyses depends on the strength of the underlying studies. This inherent limitation of syntheses appears in the case of a meta-analysis of sodium-glucose cotransporter 2 inhibitors for the treatment of type 2 diabetes because many of the pertinent randomized trials did not handle patient dropout and "rescue" medication properly. Repudiated statistical methods, such as last observation carried forward, and unsophisticated methods for handling postrescue data produce unreliable summary estimates. Future reports of randomized studies and meta-analyses of those studies must focus on posing precise questions about the treatment effect of interest and then implement appropriate statistical methods to account for missing data, patient dropout, and use of rescue medication.

Original languageEnglish (US)
Pages (from-to)285-288
Number of pages4
JournalAnnals of Internal Medicine
Volume159
Issue number4
DOIs
StatePublished - Aug 20 2013
Externally publishedYes

ASJC Scopus subject areas

  • Internal Medicine

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