Implemented back in 2005, the lung allocation score is used to prioritize patients awaiting lung transplants in the United States. Sicker transplant candidates have a higher calculated score and are ...
When you have a lot of data to enter, it is more efficient to specify the approximate number of observations rather than to create them one at a time. Click in the upper left corner of the data window ...
Five variable selection methods are available. The simplest method (and the default) is SELECTION=NONE, for which PROC PHREG fits the complete model as specified in the MODEL statement. The other four ...
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