Error control variability in pathway-based microarray analysis.
Error control variability in pathway-based microarray analysis.
复制标题
基于途径的微阵列分析中的误差控制变异性。
DOI:
10.1093/bioinformatics/btp385
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发表时间:
2009-09-01
期刊:
影响因子:
--
通讯作者:
Liu S
中科院分区:
文献类型:
--
作者:
Gold DL;Miecznikowski JC;Liu S
Motivation: The decision to commit some or many false positives in practice rests with the investigator. Unfortunately, not all error control procedures perform the same. Our problem is to choose an error control procedure to determine a P-value threshold for identifying differentially expressed pathways in high-throughput gene expression studies. Pathway analysis involves fewer tests than differential gene expression analysis, on the order of a few hundred. We discuss and compare methods for error control for pathway analysis with gene expression data. Results: In consideration of the variability in test results, we find that the widely used Benjamini and Hochberg's (BH) false discovery rate (FDR) analysis is less robust than alternative procedures. BH's error control requires a large number of hypothesis tests, a reasonable assumption for differential gene expression analysis, though not the case with pathway-based analysis. Therefore, we advocate through a series of simulations and applications to real gene expression data that researchers control the number of false positives rather than the FDR. Availability: Our R package, EPath.omg is available at http://sphhp.buffalo.edu/biostat/research/software. Contact: dlgold@buffalo.edu Supplementary information: Supplementary data are available at Bioinformatics online.
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DOI:
10.1073/pnas.0708476104
发表时间:
2007-11-06
影响因子:
11.1
作者:
Xu, Qing;Majumder, Pradip K.;Sellers, William R.
通讯作者:
Sellers, William R.
DOI:
10.1111/1467-9868.00346
发表时间:
2002-01-01
影响因子:
5.8
作者:
Storey, JD
通讯作者:
Storey, JD
DOI:
10.1073/pnas.0511150103
发表时间:
2006-02-28
影响因子:
11.1
作者:
Bourquin, JP;Subramanian, A;Orkin, SH
通讯作者:
Orkin, SH
影响因子:
3
作者:
Kim, SY;Volsky, DJ
通讯作者:
Volsky, DJ
DOI:
10.1111/j.2517-6161.1995.tb02031.x
发表时间:
1995-01-01
影响因子:
5.8
作者:
BENJAMINI, Y;HOCHBERG, Y
通讯作者:
HOCHBERG, Y