A penalization approach to random-effects meta-analysis.
A penalization approach to random-effects meta-analysis.
复制标题
随机效应荟萃分析的惩罚方法。
DOI:
10.1002/sim.9261
复制
发表时间:
2022-02-10
影响因子:
2
通讯作者:
Chu H
中科院分区:
文献类型:
--
作者:
Wang Y;Lin L;Thompson CG;Chu H
Systematic reviews and meta-analyses are principal tools to synthesize evidence from multiple independent sources in many research fields. The assessment of heterogeneity among collected studies is a critical step when performing a meta-analysis, given its influence on model selection and conclusions about treatment effects. A common-effect (CE) model is conventionally used when the studies are deemed homogeneous, while a random-effects (RE) model is used for heterogeneous studies. However, both models have limitations. For example, the CE model produces excessively conservative confidence intervals with low coverage probabilities when the collected studies have heterogeneous treatment effects. The RE model, on the other hand, assigns higher weights to small studies compared to the CE model. In the presence of small-study effects or publication bias, the over-weighted small studies from a RE model can lead to substantially biased overall treatment effect estimates. In addition, outlying studies may exaggerate between-study heterogeneity. This article introduces penalization methods as a compromise between the CE and RE models. The proposed methods are motivated by the penalized likelihood approach, which is widely used in the current literature to control model complexity and reduce variances of parameter estimates. We compare the existing and proposed methods with simulated data and several case studies to illustrate the benefits of the penalization methods.
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影响因子:
1.9
作者:
Ibrahim JG;Zhu H;Garcia RI;Guo R
通讯作者:
Guo R
影响因子:
2
作者:
Hoaglin, David C.
通讯作者:
Hoaglin, David C.
DOI:
10.1016/0197-2456(86)90046-2
发表时间:
1986-09-01
期刊:
CONTROLLED CLINICAL TRIALS
影响因子:
--
作者:
DERSIMONIAN, R;LAIRD, N
通讯作者:
LAIRD, N
影响因子:
39.2
作者:
Cornell, John E.;Mulrow, Cynthia D.;Goodman, Steven N.
通讯作者:
Goodman, Steven N.
影响因子:
2
作者:
Higgins, JPT;Thompson, SG
通讯作者:
Thompson, SG