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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: RE: Nonparametric test |

Date |
Tue, 7 Oct 2008 13:22:58 +0100 |

Your data structure is now clear. Thanks for that. I remain totally in the dark on what kind of test and what kind of hypothesis you have in mind. You ask for a paried test but even a guess that that is a typo for paired does not help me as I do not see here a paired comparison of any kind. What's more, advice is difficult if not foolish in the absence of information on survey design. Sorry not to be able to add more, but you didn't answer several questions in my earlier post. Naturally this doesn't inhibit others from answering your question. Nick n.j.cox@durham.ac.uk nigussie Tefera I am very sorry for stating my question in an ambiguous form. Here, is an example country individual income group x 1 2 x 2 1 x 3 2 x 4 3 . . . . . . . . . y 1 1 y 2 3 y 3 1 y 4 2 . . . . . . . . . y 1 3 y 2 2 y 3 1 y 4 1 . . . . . . . . . Now I want to generate the following table with paried test (compared all countries) Income group country X y z w paried test 1 count count count count ? 2 count count count count ? 3 count count count count ? If I want to fill all ? (question marks) what stata command should I use? Note: I have no problem in producing count. By the way, count can be either row or column percentages. I hope this will clarify the issues Nick Cox <n.j.cox@durham.ac.uk> I don't get a clear picture of what your data look like. We have countries, groups and individuals floating around in perfect fuzziness. Let me try again. 1. Do your data look like this? i.e. one observation, one country. Country Income group x 1 y 2 z 2 w 3 2. Or do you have replicates (e.g. areas, individuals) within each country? i.e. several observations for each country. 3. Or do you have something else? If so, give an example. Please answer: 1, 2 or 3. Also, what do you mean when you say that you want a separate test for each income group? No difference in what? Nick n.j.cox@durham.ac.uk nigussie Tefera Many thanks! My data looks like eactly what you stated but country x has high, middle and low income groups (individuals) and the same is applied for country y, z and w. Now, I want to test, whether there is statistically significant difference among high income groups across countries. The same is also true for mindle and low income groups. In short: the null hypothesis is no difference among countries for low, middle and high income groups (I need separate test for each income groups) Nick Cox <n.j.cox@durham.ac.uk> These are your variables, but what is your data structure? Do your data look like this? Country Income group x 1 y 2 z 2 w 3 Or do you have replicates (e.g. areas, individuals) within each country? And what hypothesis are you testing? nigussie Tefera I have two categorical variables: namely incomecat (1=high,2=middle and 3=low income) and country ( labeled as (x, y, z, w)). Suppose that each country has high, middle and low income group. If I want to run paired test for each income group across countries, what stata command should I use? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: RE: Nonparametric test***From:*David Airey <david.airey@Vanderbilt.Edu>

**References**:**Re: st: RE: Nonparametric test***From:*nigussie Tefera <nitefera@yahoo.com>

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