... selec-tion and, therefore, bias in the dataset. Further, allowancehad to be made for the variability in admission criteria for the various hospitals across Spain. Finally, since day careattendance ... hospitalised infants within the Munich study. Further, only six of the hospitalised infantshad a confirmed diagnosis of RSV, as testing is not routine in Germany. Taking these differences into consideration, the ... contribute to the overall predictiveability of the model. Indeed, the discriminatory power ofsuch models is always greater than that afforded by the simple sum of its component parts. To exemplify this,...