Here are some examples:. ALL produces all appropriate plots. The description does not appear in the plots. Kernel-smoothed estimates are produced for the product-limit method. You can choose one of the following strata options:. The plot-requests include the following:. You can specify one of the following bandwidth-options.
Previous Page Next Page. The default is the smallest observed event time. EP outputs the equal-precision confidence bands. PDF P specifies a plot of the estimated probability density function versus time life-table method only. The third character defines the tick mark for the axes, and the fourth character defines the lower-left corner of the plot. This option affects only the displayed plots and has no effect on any calculations. Each interval contains its lower endpoint but does not contain its upper endpoint.
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This option is useful when only an output data set is needed. Collett and Lachin refer it as the complementary log-log transformation. When this option is lifeteest with the product-limit method, it reduces the number of survival estimates displayed by displaying only the estimates for the smallest time within each specified interval.
EP outputs the equal-precision confidence bands. The plot-requests include the following:. Valid values for type are as follows:.
The description does not appear in the plots. ALL outputs both the Hall-Wellner and the equal-precision confidence bands.
ALL produces all appropriate plots. The number must plkt positive and at least as large as the largest event time in the data. The plot-requests include the following: HW outputs the Hall-Wellner confidence bands. The time points are listed in the column labeled Timelist. When you specify only one plot-requestyou can omit the parentheses around the plot-request. You can choose one of the following strata options:.
Statistical Graphics Using ODS
However, if the largest observed time in the data is censored, the area under the survival curve is not a closed area. You can use the following keywords:.
PANEL specifies that separate plots for the strata be organized into panels of two or four plots, depending on the number of strata. EP displays the equal-precision band. The options listed in Table Only the number of censored and event times, plots, and test results is displayed. Here are some pproc This option is ignored if the largest observed time is an event time.
The following hazard-options can be specified for the product-limit liffetest, but only kaplqn CL option can be used for the life-table method. These endpoints must all be nonnegative numbers. Consequently, the number of intervals can be different from the number requested. RANGE lower,upper selects the bandwidth from the interval lower, upper that minimizes the mean integrated squared error.
When you specify only one plot-request, you can omit the parentheses around the plot-request. The choices are as follows: ALL displays both the equal-precision and the Hall-Wellner bands. For example, you can display the number of subjects at risk in a survival plot through ODS Graphics, but such a feature is not available in traditional graphics or line printer plots. This is also referred to as the log cumulative hazard transformation since it is applying the lifetsst function to the cumulative hazard function.
By default, the most recently created SAS data set is used. To send the plot output to prc printer with the IBM graphics character set 1 or 2 or display it directly on your PC screen, you can use the hexadecimal representation.
The default value is The third character defines the tick mark for the axes, and the fourth character defines the lower-left corner ;lot the plot. If more than one test is produced, the test is chosen in the following order: Each interval contains its lower endpoint but does not contain its upper endpoint.
The default is WORK. This option is not needed when the life-table method is used to compute the survival estimates, since the plot of censored observations is not produced. This option affects only the displayed plots and has no effect on any calculations. This option has no effect if there is only one stratum.
Survival Estimate Plot with PROC LIFETEST :: SAS/STAT(R) User’s Guide
The default value is 0. Since the Kaplan-Meier survival curve is a decreasing step function, each given time point falls in an interval that has a constant survival estimate. Any character or hexadecimal string can be used to customize the plot appearance. Here are some examples:. Confidence bands are available only for the product-limit method. For example, if kkaplan the FAILURE and CL options are specified, the plot displays the failure curves as well as the pointwise confidence limits for the failure functions.
You can specify one of the following keywords. Dictionary for further information. Pointwise confidence limits are displayed optionally by specifying the CL option.