Comparative Study On The Effect Of Neck Circumference And Body Mass Index On Abnormal Glycolipid Metabolism In Community

Objective:To investigate the effects of neck circumference(NC)and body mass index(BMI)on the elderly patients with abnormal glucose and lipid metabolism and to compare the effects of the two evaluations.Method:In the 15 communities in Nanchang,10 071 permanent residents(having lived in Nanchang for more than 5 years)10 071 were epidemiological survey subjects.Questionnaire surveys,physical examinations and biochemical tests were conducted.The study was selected according to certain criteria.The epidemiological survey population was the subject of the study and was eventually included in 2753 people.The height,weight,neck circumference,blood lipids,blood sugar,and medical history of the selected subjects were collected.MedCalc software was used to draw receiver operating characteristic curve of NC,BMI evaluating abnormal glucose metabolism,dyslipidemia,calculate the area under the curve(AUC)and evaluation cut-points,Z test comparison of NC,BMI evaluation effect.P<0.05 was considered statistically significant.Result:Among the 2753 elderly people in the community,1176(42.72%)were males and 1577(57.28%)were females.The average age of the total population was(67.0±6.0)cm.The NC and age of male group was higher than that of female group,the difference was statistically significant(P<0.01).There was no significant difference between male and female groups in BMI(P>0.05).The detection rate of dyslipidemia was higher in the female group than in the male group,the difference was statistically significant(P<0.01).There was no significant difference in the prevalence of abnormal glucose metabolism between the male and female groups.Comparative evaluating the effect of NC and MBI on abnormal glucose metabolism,In the male group,602 cases positive(51.19%),NC,BMI evaluate of glucose metabolism abnormalities ROC curve AUC were 0.582,0.595,the evaluation was statistically significant(P<0.05),test those AUC with Z test,The difference was not statistically significant(Z=0.901,P=0.3678);and the optimal cut-off value of abnormal glucose metabolism was 36.4cm in NC and 24.2kg/m~2 in BMI.In the female group,833 cases positive(52.82%),NC,BMI evaluate of glucose metabolism abnormalities ROC curve AUC were 0.581,0.587,the evaluation was statistically significant(P<0.05),test those AUC with Z test,The difference was not statistically significant(Z=0.500,P=0.6169);and the optimal cut-off value of abnormal glucose metabolism was 31.9cm in NC and 23.7kg/m~2 in BMI.Comparative evaluating the effect of NC and BMI on dyslipidemia,In the male group,685 cases positive(58.25%),NC,BMI evaluate of dyslipidemia ROC curve AUC were 0.637,0.671,the evaluation was statistically significant(P<0.05),test those AUC with Z test,NC group AUC lower than BMI group,the difference was statistically significant(Z=2.356,P=0..0185);and the optimal cut-off value of abnormal glucose metabolism was 37.9cm in NC and 23.6kg/m~2 in BMI.In the female group,1056cases positive(66.96%),NC,BMI evaluate of dyslipidemia ROC curve AUC were0.565,0.609,the evaluation was statistically significant(P<0.05),test those AUC with Z test,NC group AUC lower than BMI group,the difference was statistically significant(Z=3.078,P=0..0021);and the optimal cut-off value of abnormal glucose metabolism was 31.5cm in NC and 21.8kg/m~2 in BMI.Conclusion:1.NC and BMI can be used to screen elderly patients for abnormal glucose metabolism and dyslipidemia.2.Evaluating elderly patients with abnormal glucose metabolism,the neck circumference is comparable to BMI;when evaluating elderly patients with dyslipidemia,BMI is superior to NC.