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Fw: st: How to change the base reference variable


From   saqlain raza <[email protected]>
To   Stata <[email protected]>
Subject   Fw: st: How to change the base reference variable
Date   Tue, 27 Nov 2012 05:22:12 -0800 (PST)

If I understand well your question, you can use 


-reg FOOD_REC_YESNO WSTCHGE_WTANDVOL  C7_WSTCHRG_FREQ ......, base(0) OR base(1)- as per your requirement. 



Saqlain
PhD Researcher



________________________________
From: Ángel Rodríguez Laso <[email protected]>
To: [email protected] 
Sent: Tuesday, November 27, 2012 1:42 PM
Subject: Re: st: How to change the base reference variable

Dear Sharon,

I'm not sure I understand your query.

Assuming C7_FLAT_FEE is coded now 0 'by weight' 1 'flat fee' , you
only have to recode 0=1 and 1=0 to make flat fee the reference
category (remember to change value labels).

Alternatively, you can try if this works:
char C7_FLAT_FEE [omit] 1


Best regards,

Angel Rodriguez-Laso


2012/11/27 Sharon Brody <[email protected]>:
> How do I change the "base" variable for the following when I want to compare the respondents that pay by weight against the ones that pay by flat fee. I want to use the "Flat Fee" as the base reference and compare the other values against it, so from what I understand, the Flat Fee will be 0 and the other variables relate to this one???
>
>
>                 
                                       |                       Robust
>
> FOOD_REC_YESNO                   |      Coef.       Std. Err.            z    P>|z|     [95% Conf. Interval]
> ---------------------------+----------------------------------------------------------------
> WSTCHGE_WTANDVOL |             .6269663   .0758675     8.26   0.000     .4782687    .7756639
>     C7_WSTCHRG_FREQ |             .3669699   .1222214     3.00   0.003     .1274202    .6065195
>      
C7_WSTCHRG_SIZE |             .6952631   .1009664     6.89   0.000     .4973725    .893153
> C7_WSTCHRG_NOCHRGE |        .2395512   .0674308     3.55   0.000     .1073892    .3717132
>                   C7_FLAT_FEE |            .1504759   .0565794     2.66   0.008     .0395823    .2613695
>              MARRIEDDUMMY |            .0867563   .0446619     1.94   0.052    -.0007795    .1742921
>                     A01_SEX |          -.0569886   .0406814    -1.40   0.161   
-.1367228    .0227455
>               A02_AGEGROUP |           .0586061   .0161849     3.62   0.000     .0268843     .090328
> A05_YEAR_POST_SCHOL|          .0048855   .0064896     0.75   0.452    -.0078338    .0176048
>
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