Launch the Fit Parametric Survival Platform

Launch the Fit Parametric Survival platform by selecting Analyze > Reliability and Survival > Fit Parametric Survival.

Figure 15.4 The Fit Parametric Survival Launch Window 

Tip: To change the alpha level, click the Model Specification red triangle and select Set Alpha Level.

For more information about the options in the Select Columns red triangle menu, see Column Filter Menu in Using JMP.

The Fit Parametric Survival launch window contains the following options:

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

Specifies a column with indicators to identify right-censored observations. Select the value that identifies right-censored observations from the Censor Code menu. The Censor column is used only when one Time to Event column is entered.

Freq

Specifies a column that contains the frequencies or counts of observations for each row when there are multiple units recorded.

Cause

Specifies a column that contains 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

Performs a separate analysis for each level of a classification or grouping variable.

Location and Scale Effects

Specifies location and scale effects. For more information about the Construct Model Effects options, see Construct Model Effects in Fitting Linear Models.

Personality

Indicates the fitting method. Parametric Survival should always be selected.

Distribution

Choose the desired response distribution that is appropriate for your data. Choose the All Distributions option to fit all the distributions and compare the fits. If you choose All Distributions, the report shows a comparison of the distribution fits. See The Parametric Survival - All Distributions Report.

Note: By default, the All Distributions option fits a model for the log-location-scale distributions that appear above All Distributions in the Distribution menu. Select Preferences > Platforms > Fit Parametric Survival > Include location-scale distributions in All Distributions to change the behavior of the All Distributions option to also include the location-scale distributions.

Censor Code

Identifies the value in the Censor column that designates right-censored observations. After a Censor column is selected, JMP attempts to automatically detect the censor code and display it in the box. To change this, you can click the red triangle and select from a list of values. You can also enter a different value in the box. If the Censor column contains a Value Labels column property, the value labels appear in the list of values. Missing values are excluded from the analysis.