Re: Help Multi-level odds ratio SPSS

Posted by Nkem Ntonghanwah on Jun 18, 2020; 6:46pm
URL: http://spssx-discussion.165.s1.nabble.com/Multi-level-odds-ratio-help-tp5739221p5739233.html

Part 1 of your problem

Logistic regression is available is SPSS via the Regression Model.

You select binary logistic 

and complete the dialogue boxes.

below two set of menus

For question 2, it would be useful to know type of design and why you wish to compare model with different dependent.

**Default model with a categorical variable 

LOGISTIC REGRESSION VARIABLES Y

  /METHOD=ENTER X 

  /CONTRAST (Agegrp_Marriage )=Indicator

  /PRINT=CI(95)

  /CRITERIA=PIN(0.05) POUT(0.10) ITERATE(20) CUT(0.5).

****Model with Reference Category for X1 is the first category, and for X2 is last  - i.e. the default

*****Variable addition using forward conditional likelihood

** summary results produced at the last step, 

LOGISTIC REGRESSION VARIABLES Y

  /METHOD=FSTEP(COND) X1 X2 

  /CONTRAST (X1)=Indicator(1)

  /CONTRAST (X2)=Indicator

  /PRINT=SUMMARY CI(95)

  /CRITERIA=PIN(0.05) POUT(0.10) ITERATE(20) CUT(0.5).

best wishes

On Thu, Jun 18, 2020 at 11:21 AM meatduck <[hidden email]> wrote:

Hi,

I'm a complete newbie when it comes to this, and in need of some help.

I would like to know how to calculate odds ratio for an outcome (0 vs 1 - no
disease vs disease), of different serum X protein levels (normal,
borderline, high) in SPSS. And is there any way to compare these odds ratio
to another Y protein or Z, with the same levels (normal, borderline, high)?

Thanks in advance,
Carlos



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