search for: fpi1

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2008 Apr 06
1
lme cant get parameter estimated correctly
...t.seed(76589437887) fph = 0.4 Sigh = sqrt(0.0002) Sigi = sqrt(0.04) ci = 1 fpi = matrix(,7200,3) for (i in 1:90) { fph = rnorm(1, fph, Sigh) for (k in 1:80) { fpi[ci,1:3] = matrix(c(i, k, rnorm(1, fph, Sigi)),1) ci = ci+1 } } colnames(fpi) = c("hospid", "empid", "fpi1") dta = as.data.frame(fpi) lme = lme(fpi1 ~ 1, dta, ~1|hospid) summary(lme) lme = lme(fpi1 ~ 1, dta, ~1|hospid) summary(lme) Linear mixed-effects model fit by REML Data: dta AIC BIC logLik -2555.416 -2534.771 1280.708 Random effects: Formula: ~1 | hospid...