Herramienta Puntuación de supervivencia
The Survival Score tool provides both the estimated relative risk and restricted mean survival time based on a Cox proportional hazards model, which can be estimated using the Survival Analysis tool.
The estimated relative risk (returned in the output field "Risk") provides the expected probability the unit described in a record will not survive to the next time period relative to a unit that possessed the mean characteristics in the sample used to estimate the model. For example, if the returned value for a particular record is 2.4, it means that the entity described by that record is 2.4 times more likely not to survive to the next period than an entity that possessed the mean of the predictors in the data used to estimate the model.
The restricted mean survival time is the mean number of time periods that a unit described in a record will survive over a user-specified (longer) time period and is returned in the output field "RMST_
Importante
Esta herramienta no se instala automáticamente con Alteryx Designer o las herramientas R. Para utilizar esta herramienta, descárgala desde Alteryx Analytics Gallery.
Conectar entradas
A Cox proportional hazards model object produced by the Survival Analysis tool.
A data stream that is consistent with the associated Cox proportional hazards model in terms of field names and types
Configurar la herramienta
The number of time units to use as the basis for the restricted mean survival time: The number of time units is an integer value.
The number of records to score at a time: The tool can break the input data into chunks, scoring a chunk at a time, and thereby avoid R's in-memory processing limitation. This option controls the number of records contained in each chunk of data.
Ver la salida
The original data stream with the relative risk and restricted mean values based on the Cox proportional hazards model appended to the data.