This document presents the introduction and background for a study evaluating the effectiveness of a self-instructional module on knowledge of renal diet among chronic renal failure patients undergoing hemodialysis. The study aims to assess knowledge before and after providing the module, and to compare knowledge in patients who receive the module versus a control group. The document outlines the need for the study, objectives, hypotheses, methodology including a pre-test/post-test quasi-experimental design, and lists references to be used.