Length of Stay Data
Length of stay for 201 patients that stayed at the University Hospital of Lausanne during the year 2000.
data(los, package="robustbase")
Vector of integer values giving the length of stay (days):
int [1:201] 16 13 17 4 15 24 59 18 33 8 ...
These data may be used to estimate and predict the total resource consumption of this group of patients.
Cf. Ruffieux, Paccaud and Marazzi (2000).
The data were kindly provided by A. Marazzi.
Cf. Hubert, M. and Vandervieren, E. (2006), p. 13–15.
Ruffieux, C., Paccaud, F. and A. Marazzi (2000) Comparing rules for truncating hospital length of stay; Casemix Quarterly 2, n. 1.
See also those for adjbox.
summary(los) # quite skewed, with median(.) = 8
plot(table(los))
boxplot(los, horizontal=TRUE, add=TRUE, col = "red", axes=FALSE)
##-> "outliers" instead of "just skewed"
hist(log(los))
boxplot(log(los), add=TRUE, col=2, border=2, horizontal = TRUE, at = -1)
## Hubert and Vandervieren (2006), p. 15, Fig. 11.
adjbox(los, col = "gray", staplecol="red", outcol = "red",
main = "(Skewness-)Adjusted and original boxplot for 'los' data")
boxplot(los, add = TRUE, staplewex= 0.2, outcex= 0.5, outpch= 4,
staplecol = "blue", outcol = "blue", staplelwd=2)
legend("topright", c("adjbox(los)", "boxplot(los)"),
col=c("red","blue"), lwd = 1:2, bty="n")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.