Abstract: Objective: To develop a questionnaire on the health belief for blood phosphorus control behaviors in hemodialysis patients and to test its reliability and validity. Methods: According to the Health Belief Model, through literature review and focus interviews with experts, a preliminary item pool was formed. Delphi method was applied to conduct two rounds of expert consultation. The contents of the questionnaire were adjusted according to the opinions of experts. The preliminary questionnaire was used to investigate 308 hemodialysis patients. Item analysis, reliability test, validity test and exploratory factor analysis were carried out. Twenty patients were selected to retest reliability one week later. Results: The response rate of the two rounds' consultation was 100%, Cr was 0.905. The Kendall coordination coefficient were 0.228, 0.352 respectively (P<0.05). The final version of the phosphorus control health belief questionnaire for hemodialysis patients included 26 items, and the exploratory factor analysis produced 3 factors, with a cumulative variance contribution rate of 71.294%. The I-CVI of the questionnaire ranged from 0.8 to 1.0, S-CVI was 0.852. The coefficient of Cronbach's α of the total questionnaire was 0.911, and the retest reliability was 0.866. Conclusion: The questionnaire has good reliability and validity, and is suitable for evaluating health belief of blood phosphorus control behavior in hemodialysis patients.

Key words: hemodialysis; phosphorus control; Health Belief Model; reliability; validity; questionnaire