Certification Board of Infection Control and Epidemiology (CBIC) Practice Exam 2026 - Free CBIC Practice Questions and Study Guide

In the context of epidemiology, Hill's Criteria of Causality serve as a framework to establish a causal relationship between exposure and disease. These criteria include aspects like strength of association, temporality, and biological gradient, all of which contribute to assessing causality effectively.

Randomness is not one of Hill's Criteria. While studies may strive for randomness in sampling or randomization in study design to avoid bias, this concept does not pertain directly to establishing causality in the way that Hill's Criteria do. The purpose of Hill's Criteria is to guide researchers in evaluating the evidence surrounding a potential causal link, which includes understanding how strong the association is, whether the exposure precedes the outcome (temporality), and how changes in exposure relate to changes in outcome (biological gradient).

Therefore, identifying randomness as an element within Hill's Criteria would misalign with what the framework aims to achieve, making it the correct answer to the question.