This document analyzes the relationship between fatigue levels and several potential confounding variables in cancer patients, including: 1. Gender - Mean fatigue was higher in women (6.47) than men (5.71) and the difference was statistically significant. 2. Cancer stage - No significant correlation was found between cancer stage and fatigue levels. 3. Number of chemotherapy cycles - No significant correlation was found between number of chemotherapy cycles (<3 vs. >=3) and fatigue levels. The document examines several other potential confounding variables and their relationship to fatigue, but finds no statistically significant correlations.