Study on value of simple visual calorie estimation method in assessment of dietary caloric intake in maintenance hemodialysis patients
Objective To explore the reliability and effectiveness of simple visual calorie estimation method in assessment of dietary caloric intake in maintenance hemodialysis(MHD)patients.Methods A total of 100 cases of MHD patients treated in our hemodialysis center were selected for the two-part study.In the first part of the study,two assessors used the self-designed simple visual calorie estimation method to evaluate calorie intake within 24 h of the 100 patients,so as to confirm the reliability of interval setting of the simple visual calorie estimation method.In the second part of the study,24-h total calorie intake in the 100 patients was investigated by two assessors who used simple visual calorie estimation method and Food Weighted Record method respectively,so as to confirm the consistency of the two methods.The actual energy intake of patients with different scores of simple visual caloric estimation method was analyzed,and the consistency of simple visual caloric estimation method and Food Weighted Record method was analyzed by receiver operating characteristic(ROC)curve,and the time spending for simple visual caloric estimation method and Food Weighted Record method was compared.Results The first part of the study showed that the calorie results obtained by the two assessors were with a good consistency of 74%,and the Weighted Kappa coefficient was 0.755[95%CI=0.660,0.849),P<0.001],indicating that the interval setting of simplified visual caloric estimation method was reliable.The results of the second part showed that the consistency test between the simple visual calorie estimation method and the Food Weighted Record method showed a percentage consistency of 72%;the Weighted Kappa coefficient was 0.767[95%CI=(0.682,0.853),P<0.001],indicating that the simple visual calorie estimation method and the weighing method were in a good consistency.The actual caloric means of the weighing methods corresponding to the different scores of the simple visual calorie estimation method fell within the total caloric interval of the corresponding scores of the simple visual calorie estimation method.With a gold standard as Food Weighted Record method,the area under the ROC curve(AUC)of the simple visual calorie estimation method was 0.704[95%CI=(0.590,0.818),P<0.002],with the sensitivity of 0.821,the specificity of 0.528,the Youden index of 0.349,indicating that the simple visual calorie estimation method and the Food Weighted Record method were with a good consistency in evaluating the total dietary calorie intake of hemodialysis patients.The evaluation time of simple visual calorie estimation method was(3.87±1.63)min,and that of Food Weighted Record method was(13.07±2.38)min;the evaluation time of simple visual calorie estimation method was shorter than that of Food Weighted Record method,and the difference was statistically significant(t=31.893,P<0.001).Conclusion The simple visual calorie estimation method can be applied to the assessment of dietary caloric intake in MHD patients.
万方数据
维普
