Risk estimate

Figure 1. Risk estimate for Newspaper subscription by Response, controlling for Income category
Risk estimate for Newspaper subscription by Response, controlling for Income category

Relative risk estimates are computed separately for each income category. Note that the relative risk of a positive response for newspaper subscribers appears to gradually decrease with increasing income, which indicates that you may be able to further target the mailings. To confirm that this relationship is not due to chance, see the tests of homogeneity of the odds ratio.

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