search for: guangchun

...t; source("D:/song/R/Test/AML/test_GO_probes.R") > catSignifTest( 'GOcat.txt') [[1]] [1] 2 [[2]] [1] 1 $V1 [1] 6 $V1 [1] 30 [[5]] [1] 0.1539431 Error in min(..., na.rm = na.rm) : invalid "mode" of argument > Could somebody tell me what's wrong? Thanks. Guangchun

I'm doing prediction of the survival cases using gene expression profiles(Affymetrix chips). Can somebody tell me how to use the Cox PH model to select genes and make a prediction of survival? Thanks. Guangchun

...2.50 0.013 exp(coef) exp(-coef) lower .95 upper .95 sex 1.94 0.516 1.15 3.26 Rsquare= 0.03 (max possible= 0.937 ) Likelihood ratio test= 6.15 on 1 df, p=0.0131 Wald test = 6.24 on 1 df, p=0.0125 Score (logrank) test = 6.47 on 1 df, p=0.0110 Thanks. Guangchun

...trieve the data frame column names? I'm working on coxph model to analyze survival data of Affy DNA chips. I get the coxph coef p-value for each probe and want output the probe name with the p-value. The probe names are the data frame column names. How can I do this? Thanks for your help. Guangchun

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