7.22 Likelihood ratio test vs. Wald test

As with logistic regression, we have used the simpler method of using Wald tests for p-values in this chapter. However, as discussed in Section 6.18, likelihood ratio tests are preferred, albeit requiring additional steps to compute for certain parameters. As described in Section 6.18, use the test.statistic = "LR" option in car::Anova() to obtain likelihood ratio tests.