Nothing
Biograph.Lexis <-
function (Bdata,Dlong) # ,Dlong,subjectsID,title)
{ # require (Epi)
# Convert dates in years
if (is.null(attr(Bdata,"format.date"))) {print ("Biograph.Lexis: format.date is missing (attribute of data)")}
z<- check.par (Bdata)
if (missing(Dlong))
{ print ("Getting data in long file format. Patience please.",quote=FALSE)
Dlong <- Biograph.long(Bdata)
Dlong2 <- Dlong$Depisode
print ("Data in long format produced. Lexis continues.") } else Dlong2 <- Dlong # on input, Dlong is Dlong#Depisode
if (!is.data.frame(Dlong2)) {stop ("Dlong$Depisode is not a data frame. Please check") }
namstates <- attr(Bdata,"param")$namstates
format.in <- attr(Bdata,"format.date")
format.born <- attr(Bdata,"format.born")
y <- date_convert (Dlong2$Tstart,format.in=format.in,format.out="year",format.born=format.born)
Dlong2$TstartY <- y
y <- date_convert (Dlong2$Tstop,format.in=format.in,format.out="year",format.born=format.born)
Dlong2$TstopY <- y
y <-date_convert (Dlong2$born,format.in=format.in,format.out="year",format.born=format.born)
bt <- y
Dlong2$Tstartage <- Dlong2$TstartY - bt
Dlong2$Tstopage <- Dlong2$TstopY - bt
en1 <- Dlong2$TstartY
ex1 <- Dlong2$TstopY
# Check whether duration is non-negative
duration <- ex1 - en1
duration.neg <- length (duration[duration < 0]) # number of negative durations
if (duration.neg > 0)
{ print ("Biograph.Lexis.R: some durations are negative.")
print (Dlong2[duration<0,])
return
}
xx <- ifelse (as.character(Dlong2$DES)=="cens",as.character(Dlong2$OR),as.character(Dlong2$DES))
Lcoh <- Lexis( id = Dlong2$ID,
entry = list( per=en1 ),
exit = list( per=ex1, age=ex1-bt ),
entry.status=as.character (Dlong2$OR),
exit.status = xx,
data=Dlong2,
merge=TRUE)
rownames (Lcoh) <- 1:nrow(Lcoh)
return (Lcoh)
}
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