stratified random sample

[Julie L Jordan]

I’m trying to figure out how to do a stratified random sample using SPSS 8.0.

 

Does anyone know how to do this?

 

Thank you,

Julie Jordan

 

[hidden email]

Anulos qui animum ostendunt omnes gestemus!

 

[cbautista]

Hi,
I was wondering whether someone in this list has experience with
fractional polynomial regression analysis. If so, please, let me know.
Thanks,
/Christian

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[SR Millis-3]

I've worked with fractional polynomials.  From my experience, it is most easily implemented in Stata statistical software.

Here's an excellent book on the topic:

http://www.stata.com/bookstore/mmb.html


Scott R Millis, PhD, ABPP (CN,CL,RP), CStat, CSci
Professor & Director of Research
Dept of Physical Medicine & Rehabilitation
Associate - Dept of Emergency Medicine

Wayne State University School of Medicine
261 Mack Blvd
Detroit, MI 48201
Email:  [hidden email]
Tel: [phone]
Fax: [phone]


--- On Thu, 4/9/09, Christian Bautista <[hidden email]> wrote:

> From: Christian Bautista <[hidden email]>
> Subject: Fractional polynomial regression
> To: [hidden email]
> Date: Thursday, April 9, 2009, 5:25 PM
> Hi,
> I was wondering whether someone in this list has experience
> with
> fractional polynomial regression analysis. If so, please,
> let me know.
> Thanks,
> /Christian
>
> =====================
> To manage your subscription to SPSSX-L, send a message to
> [hidden email] (not to SPSSX-L), with no body
> text except the
> command. To leave the list, send the command
> SIGNOFF SPSSX-L
> For a list of commands to manage subscriptions, send the
> command
> INFO REFCARD

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[Peck, Jon]

There is an R mfp package that you could use with the SPSS/PASW R plugin.  Here is a simple example using the cars.sav file shipped with the product.

begin program r.
library(mfp)
dta=spssdata.GetDataFromSPSS("mpg accel weight")
result = mfp(mpg !~fp(accel, df=4) + fp(weight, df=2), data= dta)
print(summary(res))
end program.

You need the R plugin, R, and the mfp package for this.

Maybe this would make a good extension command.

HTH,
Jon Peck

-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of Christian Bautista
Sent: Thursday, April 09, 2009 3:25 PM
To: [hidden email]
Subject: [SPSSX-L] Fractional polynomial regression

Hi,
I was wondering whether someone in this list has experience with
fractional polynomial regression analysis. If so, please, let me know.
Thanks,
/Christian

=====================
To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
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For a list of commands to manage subscriptions, send the command
INFO REFCARD

=====================
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