Abstract:

Objective To develop and examine the reliability and validation of Dietary Knowledge-Attitude-Practice（KAP） questionnaire for hemodialysis patients. Methods According to the theory of knowledge，belief and practice，the Questionnaire item pool was preliminarily constructed through literature analysis and focus interviews with four experts. Delphi method was applied with consultation of 14 experts. Then，the content of the questionnaire was adjusted according to the experts’ opinions to form the first draft. A total of 281 hemodialysis patients were investigated through the draft scale，and item analysis，reliability test and exploratory factor analysis were carried out afterward. Among the patients，28 of them were tested again with an interval of two weeks，and the retest reliability of the questionnaire was tested through the data. Results The recovery rate of the two rounds of correspondence questionnaire was 100%，the expert authority coefficient was 0.936，and the Kendall coordination coefficient of the items in the second round of correspondence questionnaire was 0.258（P<0.05）. The Dietary KAP Questionnaire for hemodialysis patients included three dimensions of 34 items. The overall content validity of the questionnaire was 0.79. Cronbach’s α coefficient of the total questionnaire was 0.868，and the retest reliability was 0.845. A total of nine factors were generated by exploratory factor analysis，among which four factors of knowledge dimension （knowledge related to dietary potassium intake，protein energy intake，volume control，and dietary phosphorus intake），one factor of attitude dimension，and four factors of behavior dimension（dietary control，dietary monitoring，cooking skills，and selection of alternative condiments）. The cumulative variance contribution rate was 64.214%. The load of each item on each factor was >0.4. Conclusion The questionnaire holds good reliability and validity，which can be used to evaluate the dietary KAP of hemodialysis patients.

Key words: Hemodialysis, Health Knowledge, Attitudes, Practice, Diet