Survival Analysis
Examples - Overview and Data File
Overview
and Data File. The first four examples are based on a data set
reported by Crowley and Hu (1977) pertaining to the survival of heart
transplant patients. The data are included in the example data file Heart.sta. Open this data file via
the File - Open Examples
menu; it is in the Datasets folder.
The first six variables in this data set are
dates, that is, the date of the heart transplant (in the order month-day-year)
and the date when the respective patient either died or dropped out of
the study (could no longer be contacted). Variable Censored
is the censoring indicator variable with the codes
that identify whether a respective time represents an observation that
is completely specified or a censored observation (0-Complete;
1-Censored). The variable Hospital is a (fictitious) grouping
variable which identifies to which one of three different hospitals a
respective case belongs.
Instead of recording the dates in six variables
(month, day, and year for the beginning of the respective observation
and month, day, and year representing the termination of the observation),
you can enter the survival time in one variable or enter the beginning
and ending dates in two separate variables (see below).
Refer to Spreadsheet
Display Formats for information on date and time representation in
STATISTICA.
Example 1:
Actuarial Life Table
Example
2: Kaplan-Meier Product-Limit Estimates
Example
3: Comparing Survival in Two or More Groups
Example 4: Regression
Models