You can use the PROBPLOT statement to create a probability plot from lifetime data. The data can be uncensored, right censored, or arbitrarily censored. You can specify any number of PROBPLOT statements after a MODEL statement. The syntax used for the response in the MODEL statement determines the type of censoring assumed in creating the probability plot. The model fit with the MODEL statement is plotted along with the data. If there are covariates in the model, they are set to constant values specified in the XDATA= data set when creating the probability plot. If no XDATA= data set is specified, continuous variables are set to their overall mean values and categorical variables specified in the CLASS statement are set to their highest levels.
Table 57.12 summarizes the options available in the PROBPLOT statement.
Table 57.12: PROBPLOT Statement Options
Option 
Description 

Traditional Graphics 

Specifies an Annotate data set 

Specifies the color used for the axes and tick marks 

Specifies the color for filling the censor plot area 

Plots censored data as frequency counts 

Specifies the color for the censor symbol 

Specifies symbols for censored values 

Specifies the color for the fitted probability line and confidence curves 

Specifies the color for the area enclosed by the axes and frame 

Specifies the color for grid lines 

Specifies the color for lines requested by the HREF= option 

Specifies the color for tick mark values and axis labels 

Specifies the color for lines requested by the VREF= option 

Specifies a description that appears in the PROC GREPLAY master menu 

Specifies a software font for reference line and axis labels 

Computes and draws confidence limits 

Specifies the height of text used outside framed areas 

Specifies the lower limit on the lifetime axis scale 

Specifies the offset for the horizontal axis 

Specifies value as the upper lifetime axis tick mark 

Draws reference lines perpendicular to the horizontal axis 

Specifies labels for the lines requested by the HREF= option 

Specifies the vertical position of labels for HREF= lines 

Requests a border around probability plots 

Specifies the distance between tiles 

Displays the iteration history for the Turnbull algorithm 

Specifies the amount to jitter overlaying plot symbols, in units of symbol width 

Specifies a line style for fitted curves and confidence limits 

Specifies a line style for all grid lines 

Specifies the line type for lines requested by the HREF= option 

Specifies the line type for lines requested by the VREF= option 

Specifies the maximum number of iterations for the Turnbull algorithm 

Specifies a name for the plot 

Suppresses the plotting of censored data points 

Suppresses the default confidence bands 

Suppresses plotting of the estimated empirical probability plot 

Suppresses the fitted probability (percentile) line and confidence bands 

Suppresses the frame around plotting areas 

Suppresses grid lines 

Suppresses horizontal label 

Suppresses horizontal tick marks 

Suppresses setting small interval probabilities to zero 

Suppresses vertical labels 

Suppresses vertical tick marks 

Displays one of the two kinds of confidence limit 

Specifies the list of percentages for which to compute percentile estimates 

Specifies the lower limit on the probability axis scale 

Displays intervals and associated probabilities for the Turnbull algorithm 

Specifies the upper limit on the probability axis scale 

Specifies the plotting position type 

Displays a table of the cumulative probabilities 

Specifies the list of initial values for the Turnbull algorithm 

Requests probability plots with probability scale on the horizontal axis 

Makes the layout of the probability plots square 

Specifies the criterion for convergence in the Turnbull algorithm 

Specifies the criterion for setting the interval probability to zero in the Turnbull algorithm 

Specifies a label for the vertical axis 

Draws reference lines perpendicular to the vertical axis 

Specifies labels for the lines requested by the VREF= option 

Specifies the horizontal position of labels for VREF= lines 

Specifies line thickness for axes and frame 

Specifies line thickness for fitted curves 

Specifies line thickness for grids 

Specifies line thickness for reference lines 

ODS Graphics 

Computes and draws confidence limits for the predicted probabilities 

Specifies value as the lower lifetime axis tick mark 

Specifies value as the upper lifetime axis tick mark 

Draws reference lines perpendicular to the horizontal axis 

Specifies labels for the lines requested by the HREF= option 

Displays the iteration history for the Turnbull algorithm 

Specifies the maximum number of iterations for the Turnbull algorithm 

Suppresses the plotting of censored data points 

Suppresses the default confidence bands 

Suppresses plotting of the estimated empirical probability plot 

Suppresses the fitted probability (percentile) line and confidence bands 

Suppresses the frame around plotting areas 

Suppresses grid lines 

Suppresses setting small interval probabilities to zero in the Turnbull algorithm 

Displays one of the two kinds of confidence limits 

Specifies the list of percentages for which to compute percentile estimates 

Specifies the lower limit on the probability axis scale 

Displays intervals and associated probabilities for the Turnbull algorithm 

Specifies the upper limit on the probability axis scale 

Specifies the plotting position type 

Displays a table of the cumulative probabilities 

Specifies the list of initial values for the Turnbull algorithm 

Requests probability plots with probability scale on the horizontal axis 

Makes the layout of the probability plots square 

Specifies the criterion for convergence in the Turnbull algorithm 

Specifies the criterion for setting the interval probability to zero in the Turnbull algorithm 

Draws reference lines perpendicular to the vertical axis 
You can specify the following options to control the content, layout, and appearance of a probability plot.
The following options are available if you use traditional graphics—that is, if ODS Graphics is not enabled.