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基于复回归分析的电动自行车风险驾驶行为研究 被引量:2
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作者 周旦 常梦莹 +1 位作者 顾国斌 李文勇 《重庆交通大学学报(自然科学版)》 CAS CSCD 北大核心 2022年第1期7-12,共6页
为明确电动自行车驾驶员风险驾驶行为对驾驶安全性的影响,结合桂林市问卷调查,采用复回归分析法建立模型,基于安全知识、安全态度和风险感知这3个尺度,对风险驾驶行为的影响程度进行了研究。通过建模分析发现:“责任态度”“群体行为态... 为明确电动自行车驾驶员风险驾驶行为对驾驶安全性的影响,结合桂林市问卷调查,采用复回归分析法建立模型,基于安全知识、安全态度和风险感知这3个尺度,对风险驾驶行为的影响程度进行了研究。通过建模分析发现:“责任态度”“群体行为态度”“担忧与关心尺度”可解释侵略行为60.1%的变异;疏忽行为48.5%的变异是由“年龄”“安全知识”和“责任态度”引起的;违规行为55%的变异是由“年龄”“违规态度”“群体行为态度”和“担忧与关心尺度”引起的。结果表明:明显的“群体行为态度”显著影响着侵略行为发生;安全知识对于非蓄意疏忽行为呈显著负向影响,但对于蓄意性的违规行为及侵略行为没有显著影响。 展开更多
关键词 交通工程 电动自行车 风险驾驶行为 复回归分析
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复回归法预测胎儿体重模型的建立
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作者 叶玲玲 胡本祥 《邯郸医学高等专科学校学报》 1999年第6期424-425,共2页
关键词 胎儿体重 回归 出生体重 预测模型 复回归分析 回归方程 分娩孕周 孕晚期 浙江省舟山市 胎儿宫内
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基于多元统计分析方法的葡萄酒评价问题研究
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作者 孙明未 《金融经济(下半月)》 2013年第9期105-109,共5页
葡萄酒的质量与酿酒葡萄的理化指标、葡萄酒的理化指标等紧密相关。本文以酿酒葡萄和葡萄酒为研究对象,利用多种统计方法研究葡萄酒指标和葡萄酒质量之间的定性和定量关系。找出评酒员对酒的评价之间存在的显著性差异,并对酿酒葡萄进行... 葡萄酒的质量与酿酒葡萄的理化指标、葡萄酒的理化指标等紧密相关。本文以酿酒葡萄和葡萄酒为研究对象,利用多种统计方法研究葡萄酒指标和葡萄酒质量之间的定性和定量关系。找出评酒员对酒的评价之间存在的显著性差异,并对酿酒葡萄进行了分级,具有一定的应用价值。 展开更多
关键词 葡萄酒评价 多元配对比较检验 聚类分析 相关回归分析 逐步回归分析
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应对方式在老年人内外向人格与总体幸福感之间的中介效应 被引量:6
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作者 李洁 姚迪 刘晓芹 《中国健康心理学杂志》 2014年第12期1905-1907,共3页
目的探讨应对方式在老年人内外向与总体幸福感关系中的中介效应。方法采用总体幸福感量表、应对方式问卷和艾森克人格量表对598名老年人进行问卷调查。结果 1老年人总体幸福感得分为(75.848±13.275);2内外向人格与应对方式的解决... 目的探讨应对方式在老年人内外向与总体幸福感关系中的中介效应。方法采用总体幸福感量表、应对方式问卷和艾森克人格量表对598名老年人进行问卷调查。结果 1老年人总体幸福感得分为(75.848±13.275);2内外向人格与应对方式的解决问题、求助、合理化3个维度之间均存在显著正相关(r=0.257,0.306,0.164;P<0.01);内外向人格与应对方式的自责、幻想、退避3个维度之间存在显著负相关(r=-0.174,-0.231,-0.148;P<0.01);总体幸福感与应对方式的3个维度,解决问题、求助、合理化之间均存在显著正相关(r=0.433,0.254,0.043;P<0.01);总体幸福感与应对方式的3个维度,自责、幻想、退避之间存在显著负相关(r=-0.238,-0.741,-0.700;P<0.01);3复回归分析结果显示,应对方式的6个维度均在人格内外向与总体幸福感之间起部分中介作用。结论应对方式通过直接和间接两条路径影响老年人的总体幸福感;内外向人格与总体幸福感的关系中,应对方式具有中介效应。 展开更多
关键词 老年人 总体幸福感 复回归分析 中介效应
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基于组合预测模型的我国天然气需求预测 被引量:6
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作者 李玉萍 张小娟 李婷 《河南科学》 2014年第10期2138-2144,共7页
在世界能源低碳化的要求下,天然气以其碳含量优势成为低碳能源的重要组成部分,天然气需求预测也随之成为焦点.运用多项式趋势面分析法与GM(1,1)灰色预测法对原始数据序列进行处理,并将两模型下处理后的数据以及二氧化碳排量数据拟合回... 在世界能源低碳化的要求下,天然气以其碳含量优势成为低碳能源的重要组成部分,天然气需求预测也随之成为焦点.运用多项式趋势面分析法与GM(1,1)灰色预测法对原始数据序列进行处理,并将两模型下处理后的数据以及二氧化碳排量数据拟合回归方程建立组合预测模型,随后以我国2003—2011年人口、GDP、天然气消费量及二氧化碳排量数据作为原始数据序列进行实例分析,通过残差检验发现,该组合预测模型的预测精度在99.96%以上,属于较好的预测模型,预测数据可靠.最后,运用该模型对2012—2018年我国的天然气需求量进行预测. 展开更多
关键词 多项式趋势面分析 GM(1 1)灰色预测 复回归分析 组合预测模型
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Predictors and in-hospital prognosis of recurrent acute myocardial infarction 被引量:11
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作者 Cheng-Fu CAO Su-Fang LI +1 位作者 Hong CHEN Jun-Xian SONG 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2016年第10期836-839,共4页
Objective To investigate the contributing factors and in-hospital prognosis of patients with or without recurrent acute myocardial infarction (AMI). Methods A total of 1686 consecutive AMI patients admitted to Pekin... Objective To investigate the contributing factors and in-hospital prognosis of patients with or without recurrent acute myocardial infarction (AMI). Methods A total of 1686 consecutive AMI patients admitted to Peking University People's Hospital from January 2010 to December 2015 were recruited. Their clinical characteristics were retrospectively compared between patients with or without a recurrent AMI. Then multivariable logistic regression was used to estimate the predictors of recurrent myocardial infarction. Results Recurrent AMI patients were older (69.3 ± 11.5 vs. 64.7 ± 12.8 years, P 〈 0.001) and had a higher prevalence of diabetes mellitus (DM) (52.2% vs. 35.0%, P 〈 0.001) compared with incident AMI patients, they also had worse heart function at admission, more severe coronary disease and lower reperfusion therapy. Age (OR = 1.03, 95% CI: 1.02-1.05; P 〈 0.001), DM (OR = 1.86, 95% CI: 1.37-2.52; P 〈 0.001) and reperfusion therapy (OR = 0.74; 95% CI: 0.52-0.89; P 〈 0.001) were independent risk factors for recurrent AMI Recurrent AMI patients had a higher in-hospital death rate (12.1% vs. 7.8%, P = 0.039) than incident AMI patients. Conclusions Recurrent AMI patients presented with more severe coronary artery conditions. Age, DM and reperfusion therapy were independent risk factors for recurrent AMI, and recurrent AM1 was related with a high risk of in-hospital death. 展开更多
关键词 Acute myocardial infarction Age Diabetes mellitus In-hospital prognosis Reperfusion therapy
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产品形态特徵与构成关系影响消费者感性评价之研究-以水壶的设计为例
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作者 莊明振(Ming-Chuen Chuang) 陳俊智(Chun-Chih Chen) 《設計學報》
感性工学的发展,使设计者能藉由定量的分析,了解产品形态特徵与消费者感性的相关性,以有效地掌握消费者偏好与感受。然而在相关感性研究中,造形分析模式的建构大多以产品元件的形态特徵为导向。根据认知心理学中相关形状辨识的理论... 感性工学的发展,使设计者能藉由定量的分析,了解产品形态特徵与消费者感性的相关性,以有效地掌握消费者偏好与感受。然而在相关感性研究中,造形分析模式的建构大多以产品元件的形态特徵为导向。根据认知心理学中相关形状辨识的理论发现,单纯依赖物件特徵的辨识,并不能完整地解释人类的认知行为;构成关系-元件与元件间的相对关系,也扮演重要的角色。换言之,以产品特徵为导向的造形分析模式,并不能完整地将消费者的感性认知予以转换。因此,本研究以感性工学之人因技术为基础,结合人类图样识别之认知特质,提出一整合形态特徵与构成关系之造形分析模式,并以水壶的设计为探讨对象。研究中利用线性复回归分析进行感性工学模式的建构,并针对特徵导向模式与整合模式进行绩效的比较。研究结果指出,藉由分析结果的比较与测试样本的验证,整合模式能明显助益於消费者感性评价行为的预测。同时,本研究亦导入非线性的类神经网路,进行感性工学模式的建构,并针对线性与非线性分析模式之结果加以比较。在此案例中,复回归分析的线性模式在感性评价的预测准确率,优於非线性的类神经网路模式。 展开更多
关键词 形態特徵 構成關係 感性工學 複回歸分析 倒傳遞類神經網路
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Safety and efficacy of Profermin~to induce remission in ulcerative colitis 被引量:2
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作者 Aleksander Krag Hans Israelsen +2 位作者 Bjrn von Ryberg Klaus K Andersen Flemming Bendtsen 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第15期1773-1780,共8页
AIM:To test the efficacy and safety of Profermin in inducing remission in patients with active ulcerative colitis(UC).METHODS:The study included 39 patients with mild to moderate UC defined as a Simple Clinical Coliti... AIM:To test the efficacy and safety of Profermin in inducing remission in patients with active ulcerative colitis(UC).METHODS:The study included 39 patients with mild to moderate UC defined as a Simple Clinical Colitis Activity Index(SCCAI)>4 and<12(median:7.5),who were treated open-label with Profermintwice daily for 24 wk.Daily SCCAI was reported observer blinded via the Internet.RESULTS:In an intention to treat(ITT)analysis,the mean reduction in SCCAI score was 56.5%.Of the 39 patients,24(62%)reached the primary endpoint,which was proportion of patients with≥50%reduction in SCCAI.Our secondary endpoint,the proportion of patients in remission defined as SCCAI≤2.5,was in ITT analysis reached in 18 of the 39 patients(46%).In a repeated-measure regression analysis,the estimated mean reduction in score was 5.0 points(95%CI:4.1-5.9,P<0.001)and the estimated mean time taken to obtain half the reduction in score was 28 d(95%CI:26-30).There were no serious adverse events(AEs)or withdrawals due to AEs.Profermin was generally well tolerated.CONCLUSION:Profermin is safe and may be effective in inducing remission of active UC. 展开更多
关键词 Ulcerative colitis DIET Probiotic Profermin Inflammatory bowel disease Dietary management Medical foods
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Early mortality and safety after transcatheter aortic valve replacement using the SAPIEN 3 in nonagenarians 被引量:2
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作者 Eiji Ichimoto Adam Arnofsky +2 位作者 Michael Wilderman Richard Goldweit Joseph De Gregorio 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2018年第6期387-393,共7页
Background Transcatheter aortic valve replacement (TAVR) has been performed for many elderly patients with severe aortic stenosis (AS). The SAPIEN 3 is one of the latest balloon-expandable prosthesis. This study a... Background Transcatheter aortic valve replacement (TAVR) has been performed for many elderly patients with severe aortic stenosis (AS). The SAPIEN 3 is one of the latest balloon-expandable prosthesis. This study aimed to investigate the early clinical outcomes after TAVR using the SAPIEN 3 in nonagenarians. Methods A total of 97 consecutive patients underwent TAVR for severe AS between De- cember 2015 and December 2016. Of these, 85 consecutive patients who underwent TAVR using the SAPIEN 3 were included. According to the age, patients were classified into age 〉 90 years group (17 patients) or age 〈 90 years group (68 patients). The clinical outcomes in- cluding all-cause mortality and composite endpoint of early safety at 30 days were evaluated. Results The Society of Thoracic Surgeons score in age 〉 90 years group was higher than age 〈 90 years group (12.3 ±6.1% vs. 8.5 ± 5.1%, P 〈 0.01). There was no significant difference in 30-day mortality between the two groups. However, the life-threatening bleeding and major vascular complications in age 〉 90 years group were greater than age 〈 90 years group (11.8% vs. 1.5%, P = 0.04 and 11.8% vs. 1.5%, P = 0.04, respectively). The composite endpoint of early safety at 30 days was similar between the two groups. Multivariate logistic regression analysis showed that prior myocardial infarction was an independent predictor of the composite endpoint of early safety (odds ratio: 4.76, 95% confidence interval: 1.02-22.21, P = 0.047). Conclusions The early mortality and safety after TAVR using the SAPIEN 3 in nonagenarians were similar and acceptable despite of higher operative risk. 展开更多
关键词 NONAGENARIANS SAPIEN 3 Transcatheter aortic valve replacement
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A clinical analysis and prognostic study of 62 cases with T1G3 urothelial carcinoma of the bladder
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作者 Fengyao Wang Qinchao Yu Yanan Liu 《The Chinese-German Journal of Clinical Oncology》 CAS 2012年第4期233-236,共4页
Objective:The aim of our study was to clarify the clinicopathological factors affecting the outcome of T1G3 urothelial carcinoma of the bladder.Methods:We retrospectively reviewed 62 cases of T1G3 bladder cancer treat... Objective:The aim of our study was to clarify the clinicopathological factors affecting the outcome of T1G3 urothelial carcinoma of the bladder.Methods:We retrospectively reviewed 62 cases of T1G3 bladder cancer treated with transuretheral resection of bladder toumor (TURBT) followed by intravesical instillation between 1997 and 2009.Cumulative survival was analyzed by Kaplan-Meier method.Cox regression was used for univariate and multivariate analysis.Log-rank method was used for the significance test.The statistical difference was accepted when the P value was lower than 0.05.Results:Median follow-up period was 40 months (6-140 months).Forty-one cases of intravesical recurrence (66%) were observed during follow-up.Two-and 5-year recurrence-free survival rates were 43.4% and 35.1%.Fourteen cases of progression (23%) were observed during the follow-up period.Two-and 5-year progression-free survival rates were 86.4% and 83.5%,respectively.Significant factors for tumor recurrence and progression were analyzed by Cox regression.Tumor multiplicity (RR=2.250),size (RR=1.039) and history of recurrence (RR=2.162) were significantly correlated with recurrence and tumor multiplicity (RR=3.695) was significantly correlated with progression on multivariate analysis.Conclusion:Tumor multiplicity,size,history of recurrence were correlated with recurrence and tumor multiplicity was significantly correlated with progression.Tumor multiplicity,size and history of recurrence should be taken into account when we make therapy strategies for T1G3 urothelial carcinoma of the bladder. 展开更多
关键词 T1G3 urothelial carcinoma of the bladder PROGNOSIS survival analysis
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MIMO Soft-sensor Model of Nutrient Content for Compound Fertil- izer Based on Hybrid Modeling Technique 被引量:6
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作者 傅永峰 苏宏业 褚健 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2007年第4期554-559,共6页
In compound fertilizer production, several quality variables need to be monitored and controlled simultaneously. It is very diifficult to measure these variables on-line by existing instruments and sensors. So, soft-s... In compound fertilizer production, several quality variables need to be monitored and controlled simultaneously. It is very diifficult to measure these variables on-line by existing instruments and sensors. So, soft-sensor technique becomes an indispensable method to implement real-time quality control. In this article, a new model of multi-inputs multi-outputs (MIMO) soft-sensor, which is constructed based on hybrid modeling technique, is proposed for these interactional variables. Data-driven modeling method and simplified first principle modelingmethod are combined in this model. Data-driven modeling method based on limited memory partial least squares(LM-PLS) al.gorithm is used to build soft-senor models for some secondary variables.then, the simplified first principle model is used to compute three primary variables on line. The proposed model has been used in practicalprocess; the results indicate that the proposed model is precise and efficient, and it is possible to realize on line quality control for compound fertilizer process. 展开更多
关键词 multi-inputs multi-outputs soft-sensor limited memory partial least squares simplified first principle model nutrient content of compound fertilizer
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Cross Analysis of Recurrent Types after Radical Resection of Colorectal Carcinoma 被引量:1
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作者 Bin-bin SU Hui SHU Jun WAN 《Clinical oncology and cancer researeh》 CAS CSCD 2010年第2期146-150,共5页
OBJECTIVE To provide the evidence of predicting and preventing the postoperative recurrence by investigating the relationship between the recurring types of colorectal carcinoma (CRC) after radical resection and cli... OBJECTIVE To provide the evidence of predicting and preventing the postoperative recurrence by investigating the relationship between the recurring types of colorectal carcinoma (CRC) after radical resection and clinicopathologic factors.METHODS Data from 464 CRC patients in stage Ⅰ-Ⅲ who were admitted to our hospital during a period from January 1998 to December 2002 and underwent radical surgery, were collected, and retrospective analysis of the clinicopathologic data from 90 out of the 464 CRC patients, who developed postoperative recurrence was conducted. The 90 patients were divided into 2 groups based on the recurrence time (RT). Those with a RT of ≤ 30 months were classified into the early recurrence (ER) group and those with RT of 〉 30 months were classified into late recurrence (LR) group. The X2 test was used for univariate analysis, and binomial logistic regression analysis for multivariate analysis.RESULTS There were 78 patients (86%) in the ER group and 12 (14%) in the LR group. The median recurrence time (MRT) was 35.1 months, 13.6 months, and 12.9 months in CRC patients with stage-Ⅰ, stage-Ⅱ and stage-Ⅲ, respectively. There were significant differences in RT among the groups (P = 0.001). In the 90 patients, the MRT was 17.4 months. The median time (MT) was 16.9 months in patients with regional recurrence, 13.3 months in patients with single recurrence, and 7.7 months in patients with multiple metastases. Univariate analysis indicated that the depth of tumor infiltration, the number of positive lymph nodes, and the macroscopic types of the primary tumor were the factors affecting the relapse of the tumor. The multivariate analysis revealed that the depth of tumor infiltration was the independent factor affectin~ the time of ER (P = 0.049).CONCLUSION Most of CRC patients receiving radical surgery for colorectal cancer occur recurrence within 30 months after the first operation, nevertheless, LR occurs in some CRC patients over 30 months after the surgery. The time interval varies in different types of recurrence. Distant metastasis is seen mainly in the cases with postoperative ER, and regional recurrence in the cases with LR. The depth of tumor infiltration is an independent predictor affecting the postoperative RT of CRC, and the tumor infiltration into, or beyond the seromembranous layer is considered as independent factor affecting the ER of CRC. 展开更多
关键词 colorectal neoplasms digestive system surgicalprocedures recurrence.
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Analysis on relative factors of lymph node metastasis and pattern of postoperative locoreginal relapse of esophageal carcinoma
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作者 Yichun Wang Fan Wang Lingling Kong 《The Chinese-German Journal of Clinical Oncology》 CAS 2012年第10期581-584,共4页
Objective: We aimed to study the relative factors of lymph node metastasis of esophageal carcinoma, and to analyze the distribution rule of lymph node metastasis of post esophagectomy patients for guiding the radiothe... Objective: We aimed to study the relative factors of lymph node metastasis of esophageal carcinoma, and to analyze the distribution rule of lymph node metastasis of post esophagectomy patients for guiding the radiotherapy. Methods: To collect the patients' data (102 cases) in our hospital from 2001 to 2009, who were found lymph node metastasis confirmed by pathologic in a certain period of time after esophageal cancer surgery. The factors affected the lymph node metastasis in esophageal cancer were analysed by single logistic regression and Logistic Regression Method. To analyze the rule of post-operative lymph node metastasis in different regions, according to the lymph node partition, in accordance with paragraphs of esophageal cancer in different groups. Results: Of the 102 patients after esophageal cancer surgery, who were confirmed by pathological examination, 50 cases had positive lymph node metastasis and 52 cases had negative, the lymph node metastasis rate was 49.0%. Lymph node metastasis rates of different depth, length and paragraph of tumor invasion had statistical difference (P < 0.05). The impact on lymph node metastasis rates of the different age and degree of differentiation had no statistical difference (P > 0.05). Multivariate analysis showed that the lesion length, depth of invasion and paragraph of tumor were meaningful factors affecting the lymph node metastasis. Of the 102 patients, 132 sites node metastasis were found by imaging study and histopathology with lower neck and supraclavicular node 59 (44.70%), upper mediastinum node 51 (38.64%), A-P windows node 1 (0.76%), anterior mediastinum node 1 (0.76%), Subcarinal node 5 (3.79%), paraesopha- geal node 3 (2.27%), hilar node 3 (2.27%), abdominal node 9 (6.82%). Conclusion: The length and depth of invasion, and paragraph of esophageal cancer are meaningful factors that affect the lymph node metastasis. The longer of lesion, deeper of infiltration and lower of paragraph, the easier to get independently lymph node metastasis. The postoperative lymph node metastasis was mainly distributed in the lower neck and supraclavicular region and upper mediastinal region, which is the focus of postoperative radiotherapy. 展开更多
关键词 esophageal neoplasm surgical procedures OPERATIVE lymph nodes RADIOTHERAPY
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Mortality and recurrence of vascular disease among stroke patients treated with combined TCM therapy 被引量:5
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作者 赵晓峰 苏世君 +1 位作者 国云红 王舒 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2012年第2期173-178,共6页
OBJECTIVE:To confirm the long-term outcomes of stroke patients and determine predicting factors for death,recurrence of vascular events and poor outcome(either recurrence or death) after the use of combined TCM therap... OBJECTIVE:To confirm the long-term outcomes of stroke patients and determine predicting factors for death,recurrence of vascular events and poor outcome(either recurrence or death) after the use of combined TCM therapy.METHODS:This was a retrospective hospital-based cohort study and was performed in the First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine in Tianjin.All subjects with stroke consecutively admitted to an inpatient ward of the Acupuncture Department from January 1,2008,to December 31,2008 were retrospectively followed through one year.The main outcomes were either a recurrence of vascular events,,mortality or both.Risk factors were recorded from medical records.Multivariate regression models were used to analyze predictors.The following independent variables were used:age,gender,hypertension,ischemic heart disease,atrial fibrillation,diabetes mellitus,carotid arterial lesions and history of stroke.RESULTS:Four-hundred and five patients were included.The 1-year mortality rate was 11.11%.23.70% of the patients had a recurrent vascular event,and 30.86% suffered a poor outcome.Multiple logistic regression analysis found that previous stroke,and advanced age were predictors of death within one year,Recurrence of vascular events was associated with carotid arterial lesions,history of diabetes and previous stroke.Long-term poor outcome was predicted by advanced age,history of diabetes,and previous stroke.CONCLUSION:Age,previous stroke,carotid arterial lesions and diabetes history seem to have different impacts on the three outcomes within one year.Our findings provide important data for planning future hospital register studies of stroke patients in TCM hospitals. 展开更多
关键词 Stroke Acupuncture Traditional Chinese medicine Mortality Recurrence Risk factors
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A predictive model for early recurrence of colorectal-cancer liver metastases based on clinical parameters 被引量:1
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作者 Siqi Dai Yao Ye +2 位作者 Xiangxing Kong Jun Li Kefeng Ding 《Gastroenterology Report》 SCIE EI 2021年第3期241-251,I0002,共12页
Background:The prognosis for patients with colorectal-cancer liver metastases(CRLM)after curative surgery remains poor and shows great heterogeneity.Early recurrence,defined as tumor recurrence within 6 months of cura... Background:The prognosis for patients with colorectal-cancer liver metastases(CRLM)after curative surgery remains poor and shows great heterogeneity.Early recurrence,defined as tumor recurrence within 6 months of curative surgery,is associated with poor survival,requiring earlier detection and intervention.This study aimed to develop and validate a bedside model based on clinical parameters to predict early recurrence in CRLM patients and provide insight into post-operative surveillance strategies.Material and methods:A total of 202 consecutive CRLM patients undergoing curative surgeries between 2012 and 2019 were retrospectively enrolled and randomly assigned to the training(n=150)and validation(n=52)sets.Baseline information and radiological,pathological,and laboratory findings were extracted from medical records.Predictive factors for early recurrence were identified via a multivariate logistic-regression model to develop a predictive nomogram,which was validated for discrimination,calibration,and clinical application.Results:Liver-metastases number,lymph-node suspicion,neurovascular invasion,colon/rectum location,albumin and post-operative carcinoembryonic antigen,and carbohydrate antigen 19–9 levels(CA19–9)were independent predictive factors and were used to construct the nomogramfor early recurrence after curative surgery.The area under the curve was 0.866 and 0.792 for internal and external validation,respectively.The model significantly outperformed the clinical risk score and Beppu’s model in our data set.In the lift curve,the nomogram boosted the detection rate in post-operative surveillance by two-fold in the top 30%high-risk patients.Conclusion:Our model for early recurrence in CRLM patients after curative surgeries showed superior performance and could aid in the decision-making for selective follow-up strategies. 展开更多
关键词 colorectal cancer liver metastases early recurrence prediction model post-operative surveillance
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