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The PHREG Procedure

PROC PHREG Statement

PROC PHREG < options > ;
You can specify the following options in the PROC PHREG statement.

COVOUT
adds the estimated covariance matrix of the parameter estimates to the OUTEST= data set. The COVOUT option has no effect unless the OUTEST= option is specified.

DATA=SAS-data-set
names the SAS data set containing the data to be analyzed. If you omit the DATA= option, the procedure uses the most recently created SAS data set.

MULTIPASS
requests that PROC PHREG recalculate the values of the variables defined by the programming statements at each Newton-Raphson iteration instead of calculating the variable values once and saving them in a utility data set. This option has an effect only when the model contains time-dependent explanatory variables. It decreases required disk space at the expense of increased execution time.

NOPRINT
suppresses all displayed output. Note that this option temporarily disables the Output Delivery

System (ODS); see Chapter 14, "Using the Output Delivery System," for more information.

NOSUMMARY
suppresses the display of the event and censored observation frequencies.

OUTEST=SAS-data-set
creates an output SAS data set that contains estimates of the regression coefficients. If you use the COVOUT option, the data set also contains the estimated covariance matrix of the parameter estimates. The data set includes

SIMPLE
displays simple descriptive statistics (mean, standard deviation, minimum, and maximum) for each explanatory variable in the MODEL statement.

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