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Research Studies is a monthly compilation of research articles funded by AHRQ or authored by AHRQ researchers and recently published in journals or newsletters.
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Grijalva CG, Roumie CL, Murff HJ
The role of matching when adjusting for baseline differences in the outcome variable of comparative effectiveness studies.
The aim of this study was to evaluate performance of analytical strategies commonly used to adjust for baseline differences in continuous outcome variables for comparative effectiveness studies. It found that with increasing HbA1c baseline differences between groups, bias in effect estimates and suboptimal confidence interval coverage probabilities increased in all approaches. These issues were further compounded by measurement error. Matching on baseline HbA1c, substantially mitigated these issues.
Citation: Grijalva CG, Roumie CL, Murff HJ . The role of matching when adjusting for baseline differences in the outcome variable of comparative effectiveness studies. J Comp Eff Res 2015;4(4):341-9. doi: 10.2217/cer.15.16..
Keywords: Comparative Effectiveness, Research Methodologies, Diabetes