Optimal sampling in derivation studies was associated with improved discrimination in external validation for heart failure prognostic models.
Iwakami N, Nagai T, Furukawa TA, Tajika A, Onishi A, Nishimura K, Ogata S, Nakai M, Takegami M, Nakano H, Kawasaki Y, Alba AC, Guyatt GH, Shiraishi Y, Kohsaka S, Kohno T, Goda A, Mizuno A, Yoshikawa T, Anzai T; investigators for the WET-NaDEF Collaboration Project.
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J Clin Epidemiol. 2020 May;121:71-80. doi: 10.1016/j.jclinepi.2020.01.011. Epub 2020 Jan 29.
J Clin Epidemiol. 2020.
PMID: 32004670