简介:AbstractBackground:Models to predict mortality in trauma play an important role in outcome prediction and severity adjustment, which informs trauma quality assessment and research. Hospitals in China typically use the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) to describe injury. However, there is no suitable prediction model for China. This study attempts to develop a new mortality prediction model based on the ICD-10-CM lexicon and a Chinese database.Methods:This retrospective study extracted the data of all trauma patients admitted to the Beijing Red Cross Emergency Center, from January 2012 to July 2018 (n = 40,205). We used relevant predictive variables to establish a prediction model following logistic regression analysis. The performance of the model was assessed based on discrimination and calibration. The bootstrapping method was used for internal validation and adjustment of model performance.Results:Sex, age, new region-severity codes, comorbidities, traumatic shock, and coma were finally included in the new model as key predictors of mortality. Among them, coma and traumatic shock had the highest scores in the model. The discrimination and calibration of this model were significant, and the internal validation performance was good. The values of the area under the curve and Brier score for the new model were 0.9640 and 0.0177, respectively; after adjustment of the bootstrapping method, they were 0.9630 and 0.0178, respectively.Conclusions:The new model (China Mortality Prediction Model in Trauma based on the ICD-10-CM lexicon) showed great discrimination and calibration, and performed well in internal validation; it should be further verified externally.
简介:摘要目的探讨黏蛋白痣的临床病理特征。方法回顾性分析2014年1月至2019年12月在中国医学科学院皮肤病医院经临床及组织病理确诊的10例黏蛋白痣患者的临床和病理资料。结果10例黏蛋白痣均为儿童期发病,平均发病年龄6.5岁。7例皮损位于躯干,其中4例位于背部;2例位于四肢,1例躯干、四肢泛发。皮损在局部排列成线状、带状或簇集状,质地柔软至坚硬不等,颜色呈肤色、淡红色和黄色。组织病理检查:10例均表现为真皮内胶原纤维束排列紊乱,其间可见程度不等的黏蛋白沉积,沉积的位置和程度不一,6例在沉积区见胶原纤维增粗、红染,其余4例表现为胶原稀疏、减少;2例出现基底层灶状液化变性,3例出现真皮内不等量成熟脂肪组织等。结论黏蛋白痣的病理主要表现为真皮内程度不等的黏蛋白沉积于杂乱的胶原束间,可与一些其他疾病类似,容易误诊,临床和病理紧密联系可确诊。
简介:摘要:目前, Windows 10操作系统的广为使用,使开发者实现了对原本产品的突破与发展,让使用者获得了更为顺畅的使用感受。而在Windows 10操作系统使用过程中有许多应用技巧尚未为人所熟知。为此,本文对Windows 10操作系统默认浏览器设置,以及利用官方工具限制Windows 10操作系统自动更新等常用技巧进行了浅析,以期抛砖引玉,为Windows 10操作系统使用者的日常应用提供参考。