case mix index (CMI) explained
Imagine you’re analyzing a group of general undergraduates taking math classes. Some are social science majors who might be taking introductory statistics, while others are engineering majors taking advanced calculus. You need some index to measure the average difficulty level of the math classes taken by all these students, say, Stats101 for 1pt while Real Analysis gets 10pt and we’ll take arithmetic mean as the difficulty score representing the general course level taken by all the students. In a hospital setting, patients would have different conditions that require different levels of care, resources, and expenses. The Case Mix Index (CMI) is a numerical value that represents the average severity and complexity of patients’ conditions treated in a hospital or a specific department. A higher CMI indicates more complex and resource-intensive cases. ...

