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biostat

Re: LOGISTIC REGRESSIOIN AND CHI SQUARE TEST

Logistic Regression is used when the dependent variable is categorical with any kind of independent variable. Binary logistics regression is used when dependent variable has two categories, multinational logistic regression is used when we have dependent variable with more than two categories. If the dependent variable id ordinal(having specific order) them ordinal logistic regression is use.
General, logistic regression is used to identify any relationship between the depend variable and independent variable(s) in non-linear manner.
Chi-square is used to see any association between two categorical variables (with more or equal 2 categories), it only tells if there is any association.
Hope it will help you, if you need more material regarding these topics the pot me at
biostat.kemu@gmail.com

ibrahim_ap

Re: Re: Re: LOGISTIC REGRESSIOIN AND CHI SQUARE TEST

Dear Sir

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tariqasl

Re: Re: LOGISTIC REGRESSIOIN AND CHI SQUARE TEST

Thank you sir.
But which book you recommend that covers all important topics needed in medical research.

drrathore

Re: LOGISTIC REGRESSIOIN AND CHI SQUARE TEST

Please visit these links.

http://faculty.chass.ncsu.edu/garson/PA765/logistic.htm

http://www.ats.ucla.edu/stat/spss/whatstat/whatstat.htm

http://luna.cas.usf.edu/~mbrannic/files/regression/Logistic.html

You might find them helpful, but the best approach would be to study a book of Biostatistics

Regards

tariqasl

LOGISTIC REGRESSIOIN AND CHI SQUARE TEST

WHEN THESE STATISTICAL TESTS ARE USED AND HOW TO INTERPRETE THE RESULTS OF THESE TESTS.

[Edited by tariqasl on 21-05-2010 at 07:40 PM GMT]