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- W2188051765 abstract "There are several applications of survival curves to show events taking place over time. These curves usually show differences between groups and this paper explores certain underlying tests. A short introduction to survival analysis will be given using the SAS procedure PROC LIFETEST. To describe variations between two groups, we illustrate the advantages and disadvantages of the nonparametric test “Log-rank” and “Wilcoxon” by appropriate examples. To analyse more than two groups, the separate SAS procedure PROC PHREG (Proportional Hazards Regression) will be used to perform a Cox regression to differentiate between different model approaches. There are four ways to select models based on the PHREG procedure: forward selection, backward elimination, stepwise selection, and best subset selection." @default.
- W2188051765 created "2016-06-24" @default.
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- W2188051765 date "2014-01-01" @default.
- W2188051765 modified "2023-09-27" @default.
- W2188051765 title "Examining the tests behind survival curves" @default.
- W2188051765 hasPublicationYear "2014" @default.
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