Addition of time-dependent covariates to a survival model significantly improved predictions for daily risk of hospital death.
作者： Jenna Wong , Monica Taljaard , Alan J. Forster , Gabriel J. Escobar , Carl van Walraven
DOI: 10.1111/J.1365-2753.2012.01832.X
关键词:
摘要: … To test for a significant difference between the number of observed and expected events within each decile, we calculated the P value associated with the standardized z-statistic [9]. …
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