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Re: st: Ologit question


From   "Anat (Manes) Tchetchik" <anatmanes@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Ologit question
Date   Wed, 31 Oct 2012 17:00:08 +0200

so If the null is rejected for all tests (which is just what I received now:
. test _b[cut1:_cons]=_b[cut3:_cons], accum

 ( 1)  [cut1]_cons - [cut2]_cons = 0
 ( 2)  [cut1]_cons - [cut3]_cons = 0

           chi2(  2) =   48.22
         Prob > chi2 =    0.0000
it means that's the cuts are sig. different, right?



On Wed, Oct 31, 2012 at 4:47 PM, Austin Nichols <austinnichols@gmail.com> wrote:
> Anat (Manes) Tchetchik <anatmanes@gmail.com>:
> E.g.
> sysuse auto, clear
> ologit rep78 foreign length mpg
> mat li e(b)
> test _b[cut1:_cons]=_b[cut2:_cons]
> test _b[cut1:_cons]=_b[cut3:_cons], accum
> test _b[cut1:_cons]=_b[cut4:_cons], accum
>
>
> On Wed, Oct 31, 2012 at 10:12 AM, Anat (Manes) Tchetchik
> <anatmanes@gmail.com> wrote:
>> OK, thank you very much
>>
>> On Wed, Oct 31, 2012 at 4:08 PM, Maarten Buis <maartenlbuis@gmail.com> wrote:
>>> On Wed, Oct 31, 2012 at 2:58 PM, Anat (Manes) Tchetchik wrote:
>>>> Running -test- yeilds :
>>>>  test
>>>>
>>>>  ( 1)  [tier_reversed]profit = 0
>>>>  ( 2)  [tier_reversed]oncology = 0
>>>>  ( 3)  [tier_reversed]cardiology = 0
>>>>  ( 4)  [tier_reversed]clinical_services = 0
>>>>  ( 5)  [tier_reversed]length_stay_tot = 0
>>>>  ( 6)  [tier_reversed]age = 0
>>>>  ( 7)  [tier_reversed]income = 0
>>>>  ( 8)  [tier_reversed]H_index = 0
>>>>  ( 9)  [tier_reversed]publications = 0
>>>>  (10)  [tier_reversed]doctors = 0
>>>>  (11)  [tier_reversed]revenue = 0
>>>>        Constraint 11 dropped
>>>>
>>>>            chi2( 10) =   24.65
>>>>          Prob > chi2 =    0.0060
>>>> not sure I understand what it means and how it referes to the cuts
>>>
>>> That is obviously not testing the null hypothesis that you wanted to
>>> test. So first define the null hypothesis, than read the help file of
>>> -test- to see how you can use -test- to test that null hypothesis.
>>>
>>> -- Maarten
>>>
>>> ---------------------------------
>>> Maarten L. Buis
>>> WZB
>>> Reichpietschufer 50
>>> 10785 Berlin
>>> Germany
>>>
>>> http://www.maartenbuis.nl
>>> ---------------------------------
>>> *
>>> *   For searches and help try:
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>>> *   http://www.ats.ucla.edu/stat/stata/
>>
>>
>>
>> --
>> Anat Tchetchik, PhD
>> Department of Hotel and Tourism Management
>> Guilford Glazer Faculty of Business and Management
>> Ben-Gurion University of the Negev
>> P.O.Box: 653
>> Beer-Sheva, Israel, 84105
>>
>> E-mail:       anat@som.bgu.ac.il
>> Phone         972-(0)8-6479735
>> Fax:           972-(0)8-6472920
>> Web:          http://cmsprod.bgu.ac.il/Eng/som/hotelmanage/Staff/Academic/ChechikA.htm
>> *
>> *   For searches and help try:
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>> *   http://www.ats.ucla.edu/stat/stata/
> *
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-- 
Anat Tchetchik, PhD
Department of Hotel and Tourism Management
Guilford Glazer Faculty of Business and Management
Ben-Gurion University of the Negev
P.O.Box: 653
Beer-Sheva, Israel, 84105

E-mail:       anat@som.bgu.ac.il
Phone         972-(0)8-6479735
Fax:           972-(0)8-6472920
Web:          http://cmsprod.bgu.ac.il/Eng/som/hotelmanage/Staff/Academic/ChechikA.htm
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


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