Yue-xian Shi1, Wei Si1, Jun-duo Liu2, Min Gao2, Si-yuan Wang3, Mei Cheng4, Yue Zhao5. 1. School of Nursing, Tianjin Medical University, Tianjin, China; Nursing Department, Affiliated Hospital of the Medical College of the Chinese People's Armed Police Force, Tianjin, China. 2. Hemodialysis Center, Tianjin First Center Hospital, Tianjin, China. 3. School of Nursing, Tianjin Medical University, Tianjin, China. 4. Nursing School, Binzhou Medical College, Yantai, Shandong, China. 5. School of Nursing, Tianjin Medical University, Tianjin, China. Electronic address: yuezhao_tmu@163.com.
Abstract
CONTEXT: Chronic kidney disease-mineral and bone disorder (CKD-MBD) is one of the most complicated morbidities among patients with end-stage renal disease. At present, a specific questionnaire assessing relevant knowledge and behavior for patients with CKD-MBD is still unavailable. OBJECTIVES: To develop and evaluate a valid and reliable questionnaire specific to patients with CKD-MBD. METHODS: Both quantitative and qualitative analyses were combined to develop and estimate the CKD-MBD knowledge and behavior (CKD-MBD-KB) questionnaire. Three hundred thirteen and 295 patients, respectively, participated in the investigation during the period from November 2013∼October 2014. Reliability and validity testing were conducted to analyze the psychometric properties of questionnaire. RESULTS: The final version of the CKD-MBD-KB questionnaire encompasses two domains, five facets, and 50 items. Reliability analysis showed that the Cronbach alpha of the five facets ranged from 0.578 to 0.854. Retest correlation coefficients of the five facets ranged from 0.825 to 0.944. Nine common factors were extracted from exploratory factor analysis that interpreted the cumulative variation of 64.1%, and factor loadings of all items were greater than 0.4. The results of confirmatory factor analysis indicated that the model had a satisfactory goodness of fit; the root mean square error of approximation = 0.070. Meanwhile, a significant correlation was found between each item and its facet. CONCLUSION: This CKD-MBD-KB questionnaire has been confirmed to have adequate psychometric properties (good reliability and validity) and may be useful in the assessment of patient-related knowledge, intervention programs, and treatment protocols.
CONTEXT: Chronic kidney disease-mineral and bone disorder (CKD-MBD) is one of the most complicated morbidities among patients with end-stage renal disease. At present, a specific questionnaire assessing relevant knowledge and behavior for patients with CKD-MBD is still unavailable. OBJECTIVES: To develop and evaluate a valid and reliable questionnaire specific to patients with CKD-MBD. METHODS: Both quantitative and qualitative analyses were combined to develop and estimate the CKD-MBD knowledge and behavior (CKD-MBD-KB) questionnaire. Three hundred thirteen and 295 patients, respectively, participated in the investigation during the period from November 2013∼October 2014. Reliability and validity testing were conducted to analyze the psychometric properties of questionnaire. RESULTS: The final version of the CKD-MBD-KB questionnaire encompasses two domains, five facets, and 50 items. Reliability analysis showed that the Cronbach alpha of the five facets ranged from 0.578 to 0.854. Retest correlation coefficients of the five facets ranged from 0.825 to 0.944. Nine common factors were extracted from exploratory factor analysis that interpreted the cumulative variation of 64.1%, and factor loadings of all items were greater than 0.4. The results of confirmatory factor analysis indicated that the model had a satisfactory goodness of fit; the root mean square error of approximation = 0.070. Meanwhile, a significant correlation was found between each item and its facet. CONCLUSION: This CKD-MBD-KB questionnaire has been confirmed to have adequate psychometric properties (good reliability and validity) and may be useful in the assessment of patient-related knowledge, intervention programs, and treatment protocols.