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Large Sample Chi Square Test for RR in Cohort Studies

Large Sample Chi Square Test for RR in Cohort Studies. =. Should be significant because :. Z. But there is a problem here:. 1 Sided H A. Large values of a chi square statistic that might indicate a significant result can occur from either large positive or

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Large Sample Chi Square Test for RR in Cohort Studies

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  1. Large SampleChi Square Testfor RRin Cohort Studies

  2. =

  3. Should be significant because: Z

  4. But there is a problem here: 1 Sided HA Large values of a chi square statistic that might indicate a significant result can occur from either large positive or large negative values of the normal statistic.

  5. One way to compute P-value: Use Z distribution.

  6. Another way to compute P value: Divide the area in the right tail of the chi square distribution in half.

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