期刊
RESEARCH SYNTHESIS METHODS
卷 10, 期 4, 页码 582-596出版社
WILEY
DOI: 10.1002/jrsm.1382
关键词
causal inference; direct standardization; inverse probability weighting; meta-analysis; outcome regression; transportability
Case-mix heterogeneity across studies complicates meta-analyses. As a result of this, treatments that are equally effective on patient subgroups may appear to have different effectiveness on patient populations with different case mix. It is therefore important that meta-analyses be explicit for what patient population they describe the treatment effect. To achieve this, we develop a new approach for meta-analysis of randomized clinical trials, which use individual patient data (IPD) from all trials to infer the treatment effect for the patient population in a given trial, based on direct standardization using either outcome regression (OCR) or inverse probability weighting (IPW). Accompanying random-effect meta-analysis models are developed. The new approach enables disentangling heterogeneity due to case mix from that due to beyond case-mix reasons.
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