representation of the joint effect of the main and interaction terms is not presented.39 As suggested by Menard (1995), in logistic regression the interpretation of the beta coefficients must be done in combination with the Exp (b) value. The rationale is that the statistical significance of the Wald statistic tends to become underestimated. The Exp (b) value is an indicator of the change in odds resulting from a unit change in the predictor. If the value of Exp (b) is greater than 1, this indicates that as the predictor increases, the odds of the outcome occurring also increase. If the value of Exp (b) is less than 1, this indicates that as the predictor increases, the odds of the outcome occurring decrease.
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