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2009 Jun 07
1
Survreg function for loglogistic hazard estimation
...nction stored in bhaz a<- 20 b <- 4 time <- 1:timeline bhaz <- ((b/a) * (time /a) ^ (b-1))/(1+(time/a)^b) # Event time stored in endtime. Baseline hazard function is controlled by # dfico value with factor loading dficoeff endtime <- numeric(samplesize) for ( i in 1:samplesize) { rnos <- runif(timeline) endtime[i] <- which(rnos <= bhaz * exp(dfico[i]*dficoeff))[1] } # Construct data frame raw <- data.frame(end = endtime, status = 1, fico_demean = dfico) # Adding censorship for( i in 1:samplesize) { if(is.na(raw$end[i])) {raw$status[i] <- 0} } for( i in 1:sample...