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External validity of risk models: Use of benchmark values to disentangle a case-mix effect from incorrect

Yvonne Vergouwe1, Karel G M Moons, Ewout W Steyerberg

  • 1Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands. y.vergouwe@umcutrecht.nl

American Journal of Epidemiology
|September 3, 2010
PubMed

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