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2006 Mar 06
1
P-values from survreg (survival package) using a clusterterm
Hi all. Belove is the example from the cluster-help page wtih the output. I simply cannot figure out how to relate the estimate and robust Std. Err to the p-value. I am aware this a marginal model applying the sandwich estimator using (here I guess) an emperical (unstructered/exchangeable?) ICC. Shouldent it be, at least to some extend, comparable to the robust z-test, for rx : 2*pnorm(-0.239/0.0816)=0.0034 ? Any help/hints are appreciated. Steen and R 2.2.1, survival 2.21 on win XP. library(survival) data(rats) marginal.model <- survreg(Surv(time, status) ~ rx + cluster(litter), rats ) summ...
2002 Sep 03
2
Suddenly can't print: "rec_read bad magic..."
Suddenly, today, my wife's Windows 95 machine can't print to the network printer on my Linux machine. It complains that "there was an error printing to \\posh\lp ... There was a problem printing to the port." The error 1st occurred (coincidentally?) after I had upgraded the kernel from 2.4.18 to 2.4.19. But rebooting to 2.4.18 has made no difference. We're running smbd