| Literature DB >> 36229904 |
Abstract
A retrospective record-linkage study (RLS) based on medical records containing drug prescription histories involves immortal time bias (ITB). Thus, it is necessary to control for this bias in the research planning and analysis stages. Furthermore, a summary of a metaanalysis including RLSs that did not control for ITB showed that specific drugs had a preventive effect on the occurrence of the disease. Previous meta-analytic results of three systematic reviews evaluating the association between statin intake and gastric cancer risk showed that the summary hazard ratio (sHR) of the RLSs was lower than 1 and was statistically significant. We should consider the possibility of ITB in the sHR of RLSs and interpret the results carefully.Entities:
Keywords: Bias; Data linkage; Hydroxymethylglutaryl-CoA reductase inhibitors; Meta-analysis; Stomach neoplasms
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Year: 2022 PMID: 36229904 PMCID: PMC9561136 DOI: 10.3961/jpmph.22.209
Source DB: PubMed Journal: J Prev Med Public Health ISSN: 1975-8375