Prognostic models require validation in external samples to establish their clinical value and utility.
Absolute Event Rate: 0% vs 0%
Prognostic models are of little clinical value unless they are shown to work in other samples. Douglas Altman and colleagues describe how to validate models and discuss some of the problems
Altman et al. (Thu,) reported a other. Prognostic models require validation in external samples to establish their clinical value and utility.