title: Contributions of meta-analyses based on individual patient data to therapeutic progress in colorectal cancer.
abstract: Meta-analysis is the statistical process of combining information from several studies addressing the same question. Meta-analyses based on individual patient data are far more reliable and informative than those based on summary statistics obtained from the trialists or extracted from the published literature. Meta-analysis of randomized clinical trials may contribute to therapeutic progress through (1) establishing efficacy benefits beyond a reasonable doubt, (2) identifying sources of heterogeneity between trials, (3) studying subsets reliably, (4) confirming differences in toxicity profiles, (5) evaluating the cost-effectiveness of experimental therapies, (6) assessing surrogate endpoints, and (7) addressing ancillary questions. All of these potential contributions are illustrated with examples in early and advanced colorectal cancer.
authors.affiliation: International Drug Development Institute, Louvain-la-Neuve, Belgium. marc.buyse@iddi.com
authors.forename: Marc
authors.initials: M
authors.lastname: Buyse
mesh_terms: D015415:Biomarkers; D002986:Clinical Trials as Topic; D015179:Colorectal Neoplasms / Q000188:drug therapy* / Q000401:mortality; D003362:Cost-Benefit Analysis; D006801:Humans; D015201:Meta-Analysis as Topic
chemical_list: D015415:Biomarkers