The low-protein diet app introduces the perceived significant efficacy of low-protein diets for patients with chronic kidney disease.

Gender, age, education level, living status, financial resources, employment status, time of suffering from kidney disease, stage of kidney disease, time of nephrology treatment, combined chronic diseases, number of health education sessions by health teachers and nutritionists.

It is an index for regular tracking and testing of research subjects. Information is provided by the laboratory department of the hospital of the research subjects. It mainly tracks serum potassium, phosphorus, sodium, calcium, and eGFR.

This scale was developed with reference to the Chronic Kidney Disease Health Management Manual of the Ministry of Health and Welfare (2018), with a total of 7 questions. It is scored as "true", "wrong" and "don't know", calculated on a scale of 0 to 1, with the highest It is 7 points, with forward and reverse questions. The higher the score, the more correct the understanding of low-protein diet.