Why Use the Likelihood Ratio Test in Epidemiology?
The LRT is advantageous in epidemiological studies because it allows researchers to:
1. Compare Nested Models: It is particularly powerful for comparing nested models, where one model is a special case of the other. 2. Assess Model Fit: It helps in assessing whether the inclusion of additional parameters (e.g., risk factors) significantly improves the model fit. 3. Hypothesis Testing: It provides a formal statistical method for hypothesis testing, particularly in the context of logistic regression and Cox proportional hazards models.
