Chronic Fatigue Syndrome Practice Test 2025 - Free Practice Questions and Study Guide

The Karnofsky Performance Scale is specifically designed to assess the functional status and activity levels of patients, including those with Chronic Fatigue Syndrome (CFS). This scale provides a quantitative measure of a patient's ability to carry out daily activities, which is crucial for understanding the impact of CFS on their quality of life. It ranges from 0 to 100, with higher scores indicating better function. This makes it particularly relevant for monitoring the effects of treatments and for research purposes related to CFS.

In contrast, the other options serve different purposes. The Borg Rating of Perceived Exertion Scale is primarily used to gauge an individual's perception of physical exertion during activities, not specifically tailored for chronic illness assessments. The Beck Depression Inventory focuses on measuring the severity of depressive symptoms rather than functional performance. The Functional Independence Measure evaluates a person's ability to perform basic daily activities but is not specified for chronic fatigue conditions. Hence, the Karnofsky Performance Scale is the most appropriate tool for measuring the activity levels of patients with CFS.