A knowledge base in quality health care informatics is built from which components?

• A. Data
• B. Information
• C. Theories
• D. Data, Information, Theories, and Models

Answer: (D)

A knowledge base in quality health care informatics is built from data, information, theories, and models. Data are the raw facts collected from health care processes—vital signs, lab values, timestamps, outcomes. When these data are organized, contextualized, and interpreted, they become information that can reveal patterns, trends, and relationships, such as rising infection rates or improvement in waiting times. Theories provide the explanations and principles that help us understand why those patterns occur, offering frameworks for interpreting relationships and guiding change. Models then represent those relationships in a usable form—conceptual, mathematical, or computational—that allow reasoning, prediction, and simulation to support decision-making. By integrating data, information, theories, and models, the knowledge base supports robust quality improvement, enabling data-driven insights that are grounded in both empirical evidence and theoretical understanding.