Quality and Reliability Methods - SAS

Chapter 20 Reliability and Survival Analysis II 377
Launching the Fit Parametric Survival Platform
The Fit Parametric Survival window contains the following role buttons:
Time to Event contains the time to event or time to censoring. With interval censoring, specify two Y
variables, where one Y variable gives the lower limit and the other Y variable gives the upper limit for
each unit.
Censor nonzero values in the censor column indicate censored observations. (The coding of censored
values is usually equal to 1.) Uncensored values must be coded as 0.
Freq is for a column whose values are the frequencies or counts of observations for each row when there
are multiple units recorded.
Cause is used to specify the column containing multiple failure causes. This column is particularly useful
for estimating competing causes. A separate parametric fit is performed for each cause value. Failure
events can be coded with either numeric or categorical (labels) values.
By
is used to perform a separate analysis for each level of a classification or grouping variable.
As shown in Figure 20.6, you specify both location and scale effects on the Location Effects and Scale
Effects tabs.
To launch the Fit Parametric Survival platform:
1. Open the sample data, VA Lung Cancer.jmp.
2. Select Analyze > Reliability and Survival > Fit Parametric Survival.
3. Select Time as Time to Event.
4. Select Age and Diag Time as model effects.
5. Select censor as Censor.
6. Click Run.