The Examination of the Effects of Obesity on a Number of Arteries and Body Mass Index by Using Expert Systems

In this study, the areas affected from obesity were examined by classifying divergent arteries and body mass index (BMI) of 30 healthy persons and 52 obese persons by using expert systems, and the classifying performances of NEFCLASS and CANFIS, which are expert systems were compared. As a result of this comparison, it is observed that the classifying performance of NEFCLASS is better than that of CANFIS, and the causes of this are examined. Furthermore, it is observed that after these classifications, obesity affects the BMI rather than divergent arteries.     

Prediction of Minor Head Injured Patients Using Logistic Regression and MLP Neural Network

In this study it is aimed to assess the posttraumatic cerebral hemodynamia in minor head injured patients. Eighty patients with minor head injury (Group 1) evaluated in the early 8 h of posttraumatic period between July 2003 and February 2004. The control group (Group 2) has composed of 32 healthy people. Bilateral blood flow velocities of middle cerebral arteries (MCA) had measured using transtemporal technique while internal carotid arteries were evaluated by submandibular examination. Two different mathematical models such as the traditional statistical method on the basis of logistic regression and a multi-layer perceptron (MLP) neural network are used to classify the age, sex, velocitiy parameters of MCA, mean velocity of extracranial ICAs and V_MCA/ V_ICA ratios. The neural network was trained, cross-validated and tested with subject’s transcranial Doppler signals. As a result of these classifications, we found the success rate of logistic regression, the success rate of MLP neural network is 88.2 and 89.1%, respectively. The classification results show that MLP neural network is offering the best results in the case of diagnosis.     

新疆乌鲁木齐市维吾尔族与汉族高血压病相关危险因素研究

目的探讨维吾尔族(维族)与汉族高血压病相关危险因素的异同。方法分别将10 638例维、汉族健康体检者分高血压组和非高血压组,对性别、年龄、吸烟史、饮酒史、高血压家族史、体质指数、腰围等相关危险因素分别进行单因素及多因素Logistic回归分析。结果汉族高血压组与非高血压组相比,年龄较大、高血压家族史、男性、腹型肥胖者的比例高(P均<0.05);维吾尔族高血压组与非高血压组相比,年龄较大、男性、肥胖比例高(P均<0.05)。经Logistic回归分析结果显示:年龄、腰围、体质指数、家族史与汉族高血压病独立相关;年龄、腰围、体质指数与维吾尔族高血压病独立相关。结论年龄、腹型肥胖、体质指数是维、汉族高血压病共同的危险因素。     

Comparison of Artificial Neural Networks with Logistic Regression for Detection of Obesity

Obesity is a common problem in nutrition, both in the developed and developing countries. The aim of this study was to classify obesity by artificial neural networks and logistic regression. This cross-sectional study comprised of 414 healthy military personnel in southern Iran. All subjects completed questionnaires on their socio-economic status and their anthropometric measures were measured by a trained nurse. Classification of obesity was done by artificial neural networks and logistic regression. The mean age±SD of participants was 34.4?±?7.5?years. A total of 187 (45.2%) were obese. In regard to logistic regression and neural networks the respective values were 80.2% and 81.2% when correctly classified, 80.2 and 79.7 for sensitivity and 81.9 and 83.7 for specificity; while the area under Receiver-Operating Characteristic (ROC) curve were 0.888 and 0.884 and the Kappa statistic were 0.600 and 0.629 for logistic regression and neural networks model respectively. We conclude that the neural networks and logistic regression both were good classifier for obesity detection but they were not significantly different in classification.     

大学生超重/肥胖的生命早期营养特征分析

目的通过回顾性调查研究,描述大学生超重/肥胖情况,探讨超重/肥胖的早期营养因素。方法按照整群抽样的方法对合肥市某一高校大一新生进行问卷调查,获得研究对象的一般情况、出生资料及早期营养情况、饮食行为和家庭基本情况等。测量大学生的身高和体重,并计算体质指数(BMI)值。运用统计分析软件,对不同组间早期营养因素进行分析。结果单因素回归结果显示大学生性别,出生体重,独生子女,居住地,5～6岁发育状况,11～12岁发育状况,父母亲体型、文化程度、职业等因素的大学生超重/肥胖检出率差异有统计学意义(P<0.05);多因素Logistic回归分析结果显示大学生11～12岁时的发育状况是超重/肥胖的最主要危险因素。结论 11～12岁发育状况是导致大学生超重/肥胖的主要影响因素。     

糖尿病与肥胖关系

目的：探讨2型糖尿病与肥胖的关系。方法：根据1985年WHO糖尿病诊断标准,11650糖耐量正常（NGT）、糖耐量低减（IGT）和糖尿病（DM）人群的肥胖情况进行研究,结果我省肥胖（BMI≥27）患病率为7．9％,BMI大于25,少于30人群,DM和IGT患病率是正常体重的倍和2．5倍。Logistic回归分析提示年龄、体重指数、腰臂围比均是IGT,DM患病的独立危险因素,结论：体重指数增加可增加糖尿病患病率。     

广州市花都区成人超重肥胖与代谢综合征的关联

目的探讨广州市花都区成人超重肥胖与代谢综合征(MS)的关联。方法采用多阶段整群随机分层抽样,于2018年在广州市花都区随机抽取6个社区卫生服务中心/镇卫生院管辖的共1108名≥18岁的常住居民进行问卷调查、体格检查及实验室指标检测。结果调查对象的MS、超重和肥胖检出率分别为11.46%、33.66%和10.11%;腹型肥胖、血压(BP)、血糖(BG)、三酰甘油(TG)、高密度脂蛋白(HDL)异常检出率分别为31.77%、16.16%、6.77%、38.09%、9.21%。多因素Logistic回归分析结果显示,年龄和体重指数(BMI)为MS的危险因素。MS、腹型肥胖、血压、血糖、三酰甘油、高密度脂蛋白的异常检出率均呈现出肥胖组>超重组>正常体质量组>体质量不足组(P<0.05)。结论广州市花都区成人超重和肥胖人群的MS患病率较高,其中年龄和体重指数(BMI)为MS的危险因素,应及时采取有效措施进行防治。     

常州农村地区高血压相关危险因素的巢式病例对照研究

目的:以大样本人群队列为基础,探讨常州农村地区人群高血压发病的相关危险因素,为高血压的早期防治提供参考依据?方法:采用巢式病例对照研究,选取常州市武进区慢性病队列中经两次随访新发高血压患者作为病例组(3 400例),按照性别?年龄进行频数匹配(1∶1),随机选取3 400例基线和两次随访均未患高血压的正常样本为对照,高血压的相关影响因素分析采用单因素和多因素Logistic回归分析?结果:单因素Logistic回归结果表明,饮酒?体重指数?总胆固醇和甘油三酯与高血压的发病相关;进一步多因素Logistic回归结果显示,饮酒?超重?肥胖?总胆固醇和甘油三酯异常可增加高血压的发病风险,而低体重为高血压的保护因素?结论:饮酒?超重或肥胖?血脂异常可能是影响常州农村地区高血压发病的危险因素,应当针对重点人群进行早期干预,降低高血压发病风险?     

体检人群非酒精性脂肪性肝病的患病率及相关因素分析

目的:探讨鄄城县企事业单位非酒精性脂肪性肝病的患病率及其相关因素,以期为早期干预及改善NAFLD预后提供依据。方法:以参与健康体检的3102例人群为研究对象,收集相关体检资料进行统计学分析。结果:3102例中NAFLD的检出率为11.03%,经单因素和logistic多元回归分析,以甘油三酯、体重指数、空腹血糖、胆固醇、腰围、舒张压与NAFLD密切相关,其中甘油三酯、体重指数相对风险度最高(OR分别为1.637和1.357)。结论:本县区企事业单位NAFLD患病率较发达地区偏低,与肥胖、高血压、高脂血症、高血糖、年龄等代谢相关性疾病有关。     

打鼾与高血压关系的流行病学研究

本文利用随机整群抽样法,对河南省沁阳县1265名(男578,女678)30岁以上农民进行了高血压与打鼾、体重指数、年龄和性别等关系的调查研究。结果发现:(1)18.0％的男性和10.2％的女性为习惯性打鼾;(2)11.3％的男性和15.4％的女性是高血压;(3)高血压与打鼾有显著的关系,多元logistic回归分析揭示,打鼾、肥胖、年龄和女性是高血压发生的危险因素,在校正了肥胖、年龄和性别后,高血压在习惯性打鼾者中发生的相对危险为不打鼾者的2.56倍,在有时打鼾者中为1.60倍。因此,我们提出,除去肥胖、年龄和性别影响外,打鼾仍然是高血压发生的一种危险因素。     

乌鲁木齐市50岁以上中老年人睡眠质量及睡眠时间对身体成分的影响分析

目的　探讨乌鲁木齐市50岁以上中老年人睡眠质量及睡眠时间对其身体成分的影响。方法　采用随机抽样的方法,选取2016年12月—2017年3月于乌鲁木齐市某体检中心体检的50岁以上中老年人845例进行问卷调查及身体成分测量,调查问卷内容包括一般情况和匹兹堡睡眠质量指数量表（PSQI,PSQI总分>7分表示睡眠质量较差、PSQI总分≤7分表示睡眠质量较好）,并使用生物电阻抗方法测量身体成分。测定受试者的身高、体质量、腰臀比、体脂肪量、体脂肪率、去脂体质量、肌肉量、四肢肌肉量、躯干肌肉量,计算体质指数（BMI）、脂肪组织指数（FMI）。采用多因素Logistic回归分析分析睡眠质量及睡眠时间对肥胖及体脂肪率超标的影响。结果　845例50岁以上中老年人中男162例,女683例;平均年龄（64.2±7.7）岁。睡眠质量较差的男37例（22.8%）,女231例（33.8%）。女性睡眠质量较好者的体脂肪量、体脂肪率、BMI、肥胖发生率、FMI均小于睡眠质量较差者（P<0.05）。不同睡眠质量、睡眠时间男性身体成分比较,差异无统计学意义（P>0.05）。女性睡眠时间<6 h者体脂肪量、体脂肪率、BMI、肥胖发生率、FMI高于睡眠时间6~8 h、>8 h者（P<0.05）。采用多因素Logistic回归分析分析睡眠质量及睡眠时间对肥胖及体脂肪率超标的影响,调整了年龄、民族、文化程度、月收入、婚姻状况后结果显示,女性睡眠质量较差者较睡眠质量较好者发生肥胖的风险增加〔OR=1.83,95%CI（1.21,2.76）,P<0.05〕;以睡眠时间6~8 h为参照,睡眠时间<6 h的女性发生肥胖及体脂肪率超标的风险均增加〔OR=1.77,95%CI（1.17,2.66）,P<0.05;OR=1.65,95%CI（1.16,2.37）,P<0.05〕。结论　乌鲁木齐市50岁以上中老年女性睡眠质量及睡眠时间对身体成分有一定的影响,但男性睡眠质量及睡眠时间对其身体成分无影响。改善中老年女性睡眠质量,增加实际睡眠时间有助于降低其体脂肪率、肥胖发生率,从而促进中老年女性身体健康。     

泰安市小学生肥胖症现况及影响因素研究

目的探讨泰安市小学儿童肥胖症分布,分析儿童肥胖症的危险因素。方法采取分层整群抽样调查方法,对研究对象的体重指数（BMI）采用多元统计方法评价小学生肥胖症可能的危险因素。结果小学生BMI呈正偏态分布。泰安市小学生肥胖症总检出率为8.21%,男性与女性检出率分别为13.14%和5.22%,性别间比较（χ2=33.323,P=0.000）检出率差异有统计学意义。多因素Logistic回归结果显示,性别、体育锻炼、饮食无规律、蔬菜摄入情况、父亲肥胖、母亲肥胖等因素与小学生肥胖症有关。结论小学生肥胖受性别、遗传、生活方式的影响。     

Joint Association of Metabolic Health and Obesity with Ten-Year Risk of Cardiovascular Disease among Chinese Adults

Objective This study aims to investigate the association of metabolic phenotypes that are jointly determined by body mass index(BMI)or fat mass percentage and metabolic health status with the tenyear risk of cardiovascular disease(CVD)among Chinese adults.Methods Data were obtained from a cross-sectional study.BMI and body fat mass percentage(FMP)combined with the metabolic status were used to define metabolic phenotypes.Multiple linear regression and logistic regression were used to examine the effects of metabolic phenotypes on CVD risk.Results A total of 13,239 adults aged 34-75 years were included in this study.Compared with the metabolically healthy non-obese(MHNO)phenotype,the metabolically unhealthy non-obese(MUNO)and metabolically unhealthy obese(MUO)phenotypes defined by BMI showed a higher CVD risk[odds ratio,OR(95% confidence interval,CI):2.34(1.89-2.89),3.45(2.50-4.75),respectively],after adjusting for the covariates.The MUNO and MUO phenotypes defined by FMP showed a higher CVD risk[OR(95%CI):2.31(1.85-2.88),2.63(1.98-3.48),respectively]than the MHNO phenotype.The metabolically healthy obese phenotype,regardless of being defined by BMI or FMP,showed no CVD risk compared with the MHNO phenotype.Conclusion General obesity without central obesity does not increase CVD risk in metabolically healthy individuals.FMP might be a more meaningful factor for the evaluation of the association of obesity with CVD risk.Obesity and metabolic status have a synergistic effect on CVD risk.     

超重及肥胖型高血压患者血清瘦素与肿瘤坏死因子α水平的变化

目的探讨在超重及肥胖型高血压病患者中,肿瘤坏死因子α(TNF-α)、瘦素水平是否升高及其影响因素。方法 28例体质量正常和31例超重及肥胖型的高血压患者,常规测量血压、体质量、身高,计算体质量指数,检测血糖、血脂、空腹胰岛素、血清TNF-α、瘦素和服糖后2 h血糖。结果与体质量正常高血压患者相比,超重及肥胖型高血压患者的收缩压、血清总胆固醇、瘦素水平增高,而血清高密度脂蛋白胆固醇水平下降,两组之间差异有统计学意义(P<0.05);相关分析提示超重及肥胖型高血压患者中收缩压与年龄、体质量指数、瘦素之间存在正相关。结论在超重及肥胖型高血压患者中,收缩压、血清总胆固醇和瘦素水平增高,高密度脂蛋白胆固醇水平下降,收缩压与年龄、体质量指数和瘦素水平密切相关。     

徐州市居民正常高值血压危险因素分析

目的 了解居民正常高值血压的危险因素.方法 于2008年6月至12月,采取整群抽样的方法抽取徐州市4个县区17 500人,利用自行设计的调查表收集被调查人群个人基本情况,并测量其身高、体重、血压,对相关因素进行单因素和多因素非条件logistic回归分析.结果 17 306人完成了调查,总应答率为98.9%.单因素分析显示,地区、性别、年龄、职业、家庭人均年收入、高脂血症史、吸烟、饮酒、吃猪肉、蔬菜摄入量、每天睡眠时间、体重指数、腹型肥胖等13个因素与正常高值血压相关（P＜0.05）;多因素逐步回归分析显示,地区、性别、年龄、家庭人均年收入、饮酒史、蔬菜摄入量、体重指数、腹部肥胖与正常高值血压相关（P＜0.05）.结论 年龄增大、饮酒史、体质指数大、腹部肥胖是正常高值血压的危险因素,蔬菜摄入量大是正常高值血压的保护性因素。     

广州市成人体质指数、腰围与血压关系的研究

OBJECTIVE: To assess the significance of body mass index (BMI) and waist circumference (WC) measurement in hypertension prediction and diagnosis and formulate the recommended values for these two indexes, aiming to provide scientific basis for determining the indicators and their cut-off points for obesity diagnosis in Chinese subjects. METHODS: A total of 1 265 residents over 20 years old were randomly selected from Yuexiu District of Guangzhou City in our multiphase study. Questionnaire-based survey was conducted in conjunction of the measurement of the height, body weight, WC and blood pressure, the results subjected to multivariate linear regression and logistic regression. RESULTS: The distribution of BMI varied significantly with gender and age with the subjects. The mean systolic and diastolic blood pressures both gradually increased with BMI, showing obvious linear relationship between BMI and blood pressure. After such factors as age, gender and education background etc were controlled, logistic regression analysis revealed that the risk for hypertension increased with BMI elevation. WC was related to the blood pressure in similar manner as BMI. CONCLUSIONS: We suggest that BMI be used as the indexes for overweight and obesity, the diagnoses of which are established in cases with BMI >or=23 and BMI >or=29 respectively. As the diagnostic index for abdominal obesity, the cut-off point of WC >or=80 cm should be instituted.     

腹型肥胖与动脉粥样硬化及外周动脉疾病相关性研究

目的: 探讨腹型肥胖与动脉粥样硬化及外周动脉疾病的相关性。方法: 将118例内分泌科门诊、住院患者以及健康体检中心体检人群,以腰围/身高比值(WHtR)=0.5为界分为腹型肥胖组(AO组,WHtR≥0.5)64例,非腹型肥胖组(NAO组WHtR<0.5)54例,分别分析WHtR与颈动脉内膜中层厚度(CIMT)及踝臂指数(ABI)的关系。结果: AO组较NAO组体质量指数、腰围、收缩压、总胆固醇、三酰甘油、低密度脂蛋白胆固醇、尿酸及CIMT均增高(P<0.05～P<0.01),而ABI及高密度脂蛋白胆固醇均显著降低(P<0.01)。多元线性回归分析显示,WHtR是CIMT和ABI的独立危险因素。Logistic回归分析显示,AO组发生动脉粥样硬化和外周动脉病变的危险分别是NAO组的3.48倍(95%CI=1.389～9.941,P<0.01)和2.27倍(95%CI=1.061～3.132,P<0.01)。结论: 与NAO组相比,AO组发生动脉粥样硬化性和外周动脉病变的风险显著增高,腹型肥胖作为心血管疾病的危险因素应越来越受到重视。     

广西成人体重异常的影响因素分析

目的 了解广西成人BMI(体重指数)异常的影响因素,掌握广西成人肥胖的流行状况,为肥胖防治提供科学依据.方法 采用分层整群随机抽样的方法,对广西的东、西、南、北、中部地区的城市和农村≥18岁常住人口开展糖尿病流行病学横断面调查,取其中有身高、体重、腰围等完整资料的18岁以上的34 737人列入本次分析.结果 广西成人超...     

长期住院精神分裂症患者体重超重相关因素分析

目的调查长期住院精神分裂患者出现体重指数超重的相关影响因素,为长期住院精神分裂症患者的体重管理提供指导参考。方法于2017年8月1~5日期间选取服用抗精神病药物≥1年的符合ICD-10诊断标准的住院精神分裂症患者为研究对象,符合条件共238例,调查年龄、受教育程度、总病程、服用的抗精神病药物、总服药年限、肥胖家族史、伴发的躯体疾病、饮食结构、平均每天睡眠时间,测量身高、体重,计算体重指数。入组的患者按BMI分类,合并分组为两组:体重过低或正常为一组(n=118),体重超重或肥胖为一组(n=120)。结果两组患者在受教育程度、总服药年限、抗精神病药、合并苯海索、合并苯二氮卓类、合并抗焦虑抑郁药、合并心境稳定剂、合并糖尿病、饮食结构、每天睡眠时间等比较,差异无统计学意义(P0.05)。两组患者在性别、年龄、总病程、肥胖家族史、合并高血压差异均有统计学意义(P0.05)。二项分类Logistic回归结果表明,性别(OR=6.233,95%CI:2.778~13.987)、合并使用抗焦虑抑郁药物(OR=0.086,95%CI:0.013~0.570)、肥胖家族史(OR=4.175,95%CI:1.159~15.047)、每天睡眠时间(OR=1.249,95%CI:1.049~1.488)是长期住院精神分裂症患者体重指数超重或肥胖的危险因素。结论合并使用抗焦虑抑郁药物、有肥胖家族史、每天睡眠时间长等可能是长期住院精神分裂症患者体重指数增加的危险因素。