Referring back to Problem 19, the same doctor then used the three variables—pain level (pain), age, and gender—to predict whether or not patients were admitted to the hospital 1admit = 12 by the ER or sent home 1admit = 02. She performs a logistic regression which produces the following results:

a. Why did she use logistic regression rather than multiple regression?
b. Interpret the results for each of the three variables.

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Variable Constant Age Gender Pain b - 11.236 0.054 -0.020 0.263 SE 0.239 0.022 0.018 0.043 Wald 2210.2 6.1342 1.2597 37.447 Sig. 0.000 0.013 0.262 0.000 eb 0.000 1.056 0.980 1.301