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Re: st: ANOVA for quartiles


From   Nick Cox <njcoxstata@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: ANOVA for quartiles
Date   Wed, 19 Sep 2012 01:41:44 +0100

With -by:-, the command to the right of the colon must make sense, so that you could run it on its own. Here the -oneway- call is illegal as no factor variable is specified. As Jay suggests, your problem is not one-way anova any way.

Nick

On 18 Sep 2012, at 23:08, Vasan Kandaswamy <vasan.kandaswamy@ki.se> wrote:

Dear Statalisters,

I intend to perform an ANOVA to compare the means of a variables across quartiles of BMI ( body mass index) in two genders (male and female ).

Example: Male    Female
BMI Q1 :  5.2        5.1
BMI Q2 :  5.6        5.4
BMI Q3 :  6.3        6.8
BMI Q3 :  7.7        7.9
I want to compare these values across the quartiles using ANOVA, and look for significance in both genders separately.

bysort bmi_quartiles gender : oneway bmi

There seems to be something wrong in this script.
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