search for: frailiti

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2011 Apr 08
1
Variance of random effects: survreg()
...gaussian(Unit) 85.26 8.95 1.4e-14 Scale= 0.434 Iterations: 5 outer, 17 Newton-Raphson Variance of random effect= 3.37 ... It is not clear from the returned list how to get the printed 3.37. 2) What is the meaning of the variance of the random effects if we fit gamma frailities? For example: set.seed(1007) x <- runif(100) # gamma frailties m <- rgamma(10, shape = 1, scale = 2) # E(m) = 2, var(m) = 4 mu <- rep(log(m), rep(10,10)) test2 <- data.frame(Time = qsurvreg(x, mean = mu, scale= 0.5, distribution = "weibull"), Status =...
2006 Oct 16
3
Install RMySQL with R 2.4.0
I just installed RMySQL 0.5-9 with R 2.4.0 on Windows XP and got the following error message when trying to run a script with RMySQL: Error in library(RMySQL) : 'RMySQL' is not a valid package -- installed < 2.0.0? Any ideas? Thanks, Frank