Date:         Wed, 31 Aug 2005 17:15:54 +0200
Reply-To:     Marta García-Granero
              <biostatistics@terra.es>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Marta García-Granero
              <biostatistics@terra.es>
Organization: Asesoría Bioestadística
Subject:      Re: KaplanMeir
In-Reply-To:  <s3158ac6.084@ngate01.cdha.nshealth.ca>
Content-Type: text/plain; charset=ISO-8859-15

Hi Terry,

TR> I'm new to SPSS and I'm wondering if anyone has any examples on how to
TR> do KaplanMeir Patient Survival and Graft Survial curves for transplant
TR> patients.

* See: http://www.graphpad.com/prism/learn/Survival%20analysis.pdf on
  survival after transplant.

* Control (n=8): 46 46+ 64+ 78 124 130+ 150+ 150+
* Treated (n=9):  9 26  43+ 46  64  75  100  130+ 130+

* (+) indicates censored data - subjects withdrawn alive.

DATA LIST LIST/group (F8.0) time (F8.0) status (F8.0).
BEGIN DATA
1  46 1
1  46 0
1  64 0
1  78 1
1 124 1
1 130 0
1 150 0
1 150 0
2   9 1
2  26 1
2  43 0
2  46 1
2  64 1
2  75 1
2 100 1
2 130 0
2 130 0
END DATA.

VALUE LABEL group 1'Control' 2 'Treated' /status 0'Alive' 1'Died'.

KM time BY group
  /STATUS=status(1)
  /PRINT TABLE MEAN
  /PLOT SURVIVAL
  /TEST LOGRANK
  /COMPARE OVERALL POOLED .

* Using the GUI:
* ANALYZE - SURVIVAL -  KAPLAN-MEIER:
* TIME: time
* STATUS: status
*         DEFINE EVENT: SINGLE VALUE: 1
*         CONTINUE
* FACTOR: group
* COMPARE FACTOR: Select 'Log-Rank'
*                 CONTINUE
* OPTIONS: Select 'Plots: Survival'.
*          CONTINUE
* OK

Regards

Marta