当前位置： SCI文献检索 > JOURNAL OF CLINICAL EPIDEMIOLOGY期刊下所有文献 > Nonrandomized studies using causal-modeling may give different answers than RCTs: a meta-epidemiological study.

Nonrandomized studies using causal-modeling may give different answers than RCTs: a meta-epidemiological study.

Abstract：

OBJECTIVES:To evaluate how estimated treatment effects agree between nonrandomized studies using causal modeling with marginal structural models (MSM-studies) and randomized trials (RCTs). STUDY DESIGN:Meta-epidemiological study. SETTING:MSM-studies providing effect estimates on any healthcare outcome of any treatment were eligible. We systematically sought RCTs on the same clinical question and compared the direction of treatment effects, effect sizes, and confidence intervals. RESULTS:The main analysis included 19 MSM-studies (1,039,570 patients) and 141 RCTs (120,669 patients). MSM-studies indicated effect estimates in the opposite direction from RCTs for eight clinical questions (42%), and their 95% CI (confidence interval) did not include the RCT estimate in nine clinical questions (47%). The effect estimates deviated 1.58-fold between the study designs (median absolute deviation OR [odds ratio] 1.58; IQR [interquartile range] 1.37 to 2.16). Overall, we found no systematic disagreement regarding benefit or harm but confidence intervals were wide (summary ratio of odds ratios [sROR] 1.04; 95% CI 0.88 to 1.23). The subset of MSM-studies focusing on healthcare decision-making tended to overestimate experimental treatment benefits (sROR 1.44; 95% CI 0.99 to 2.09). CONCLUSION:Nonrandomized studies using causal modeling with MSM may give different answers than RCTs. Caution is still required when nonrandomized "real world" evidence is used for healthcare decisions.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Ewald H,Ioannidis JPA,Ladanie A,Mc Cord K,Bucher HC,Hemkens LG

doi

10.1016/j.jclinepi.2019.10.012

subject

Has Abstract

pub_date

2020-02-01 00:00:00

pages

29-41

eissn

0895-4356

issn

1878-5921

pii

S0895-4356(19)30263-X

journal_volume

118

pub_type

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