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  • univariate regression analysis ,confidence interval and p value


    dialysis Odds Ratio Std. Err. z P>z [95% Conf. Interval]

    logintercept .0001105 .0003682 -2.73 0.006 1.61e-07 .0756841


    Dear , I am have tried univariate regression analysis in my project using stata and it gave me the abaove results.The results doesnt make sense to me a ,although the P =0.006, the confidence interval does pass through 1???

    Did I do anything wrong?
    how to interpret and defend the results this way.
    This happen also when I put this variable in multivariate analysis?


    thanks in advance

  • #2
    We can better help you if we know what command you have tried and the output of those commands. Please review the Statalist FAQ linked to from the top of the page, as well as from the Advice on Posting link on the page you used to create your post. See especially sections 9-12 on how to best pose your question. It's particularly helpful to copy commands and output from your Stata Results window and paste them into your Statalist post using CODE delimiters, and to use the dataex command to provide sample data, as described in section 12 of the FAQ.

    To present data, code, and results readably, please copy them from the Results window into a code block in the Forum editor, as explained in the Statalist FAQ. For example, the following:

    [code]
    // sample code
    sysuse auto, clear
    describe
    [/code]

    will be presented in the post as the following:
    Code:
    // sample code
    sysuse auto, clear
    describe

    Comment


    • #3
      although your results are not easy to read (please follow William's advice in the future), it appears that you are unfamiliar with scientific notation; the CI does NOT include 1; please look up (even on the web) "scientific notation"

      Comment


      • #4
        Dear
        Thanks for getting back to me .
        I am using stata 11.2.
        I have uploaded a picture of stata containing the command I used and the data I got.
        As shown in the picture, the confidence interval doesn't match with the P value (according to my understanding) for the variable used in univariateregression and again when putting it in a multivariate one?
        The P value is less than 0.05 and at the same time th e confidence interval does include 1?
        I appreciate if you can help me interpreting the data

        Hatem
        Attached Files

        Comment


        • #5
          Hatem: William suggested that you read the FAQ and gave a helpful link.

          If you read that FAQ as suggested, you'd see that we ask explicitly that you not post MS Word documents, explain why not, and explain what's better.

          Not paying attention to what we ask just delays useful replies to you and indeed makes them less likely.

          Comment


          • #6
            Rich is correct. The confidence interval you present in post #1 covers [ 0.000000161, 0.0756841 ]

            And please, read the FAQ and present results in a useful fashion. You should understand from the FAQ that many Statalist members will not open Microsoft Office documents from unknown sources.

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