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501.
Objective: To assess whether these characteristics of less misclassification and greater area under receiver operator characteristic (ROC) curve of the new injury severity score (NISS) are better than the injury severity score (ISS) as applying it to our multiple trauma patients registered into the emergency intensive care unit (EICU).
Methods: This was a retrospective review of registry data from 2 286 multiple trauma patients consecutively registered into the EICU from January 1,1997 to December 31, 2006 in the Second Affiliated Hospital, Medical School of Zhejiang University in China. Comparisons between ISS and NISS were made using misclassification rates, ROC curve analysis, and the H-L statistics by univariate and multivariate logistic progression model.
Results: Among the 2 286 patients, 176 (7.7%) were excluded because of deaths on arrival or patients less than 16 years of age. The study population therefore comprised 2 1 10 patients. Mean EICU length of stay (LOS) was 7.8 days ± 2.4 days. Compared with the blunt injury group, the penetrating injury group had a higher percentage of male, lower mean EICU LOS and age. The most frequently injured body regions were extremities and head/neck, followed by thorax, face and abdomen in the blunt injury group; whereas, thorax and abdomen were more frequently seen in the penetrating injury group. The minimum misclassification rate for NISS was slightly less than ISS in all groups (4.01% versus 4.49%). However, NISS had more tendency to misclassify in the penetrating injury group. This, we noted, was attributed mainly to a higher false-positive rate (21.04% versus 15.55% for IS S, t=-3.310, P〈0.001), resulting in an overall misclassification rate of 23.57% for NISS versus 18.79% for ISS (t=3.290, P〈0.001). In the whole sample, NISS presented equivalent discrimination (area under ROC curve: NISS=0.938 versus ISS=0.943). The H-L statistics showed poorer calibration (48.64 versus 32.11, t=3.305, P〈0.001) in 相似文献
Methods: This was a retrospective review of registry data from 2 286 multiple trauma patients consecutively registered into the EICU from January 1,1997 to December 31, 2006 in the Second Affiliated Hospital, Medical School of Zhejiang University in China. Comparisons between ISS and NISS were made using misclassification rates, ROC curve analysis, and the H-L statistics by univariate and multivariate logistic progression model.
Results: Among the 2 286 patients, 176 (7.7%) were excluded because of deaths on arrival or patients less than 16 years of age. The study population therefore comprised 2 1 10 patients. Mean EICU length of stay (LOS) was 7.8 days ± 2.4 days. Compared with the blunt injury group, the penetrating injury group had a higher percentage of male, lower mean EICU LOS and age. The most frequently injured body regions were extremities and head/neck, followed by thorax, face and abdomen in the blunt injury group; whereas, thorax and abdomen were more frequently seen in the penetrating injury group. The minimum misclassification rate for NISS was slightly less than ISS in all groups (4.01% versus 4.49%). However, NISS had more tendency to misclassify in the penetrating injury group. This, we noted, was attributed mainly to a higher false-positive rate (21.04% versus 15.55% for IS S, t=-3.310, P〈0.001), resulting in an overall misclassification rate of 23.57% for NISS versus 18.79% for ISS (t=3.290, P〈0.001). In the whole sample, NISS presented equivalent discrimination (area under ROC curve: NISS=0.938 versus ISS=0.943). The H-L statistics showed poorer calibration (48.64 versus 32.11, t=3.305, P〈0.001) in 相似文献
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1临床资料280例临产产妇中年龄最小20岁,最大32岁。初产妇225例(80.4%),经产妇55例(19.6%)。大学文化程度4例(1.4%),高中40例(14.2%),初中120例(42.9%),初中以下116例(41.4%)。农民250例(89.3%),工人14例(5.0%),民营商12例(4.3%),知识分子4例(1.4%)。2心理调查结果不同程度紧张情绪230例(82.1%)多见于初产妇。急切盼望分娩。消除环境人群,如分娩室、工作人员及各种医疗器械,其他产妇的呻吟、喊叫等影响。不同程度恐惧心理有200例(71… 相似文献
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例1.女,59岁。1月前行走时跌倒撞伤腹部,伤后第2天右上腹有一拇指头大小的肿块,明显触痛。此后肿块进行性肿大,伴有持续性胀痛。查体:右上腹明显隆起,可扪及一10×12cm的肿块,边界较清楚,上界与肝脏相连,表面光滑,质地中等,活动度小,有明显触痛。A超声波:距体表2cm可探及8×10cm的混合性肿块,内有3~4cm的液平段;肝扫描:肝内未见占位性病变、肿块区无放射性分布;肿块部穿刺获黄色微混浊液体,脓细胞0~7╱HP,李凡他试验阳性。临床诊断:上腹部炎性肿块。在硬膜外麻醉下行剖腹探查术。术中见腹膜增厚,与肿块粘连,分开粘连,有混浊液体流出,其内夹有胆固醇结石5枚,周围大网膜包裹有同样的结石共17枚,约蚕豆大小。分离大网膜,见胆囊底部有一直径2cm的穿孔。囊壁增厚,部分坏死。切除胆囊,其内有10枚同样的结石。胆总管探查无特殊发现。术后痊愈出院。 相似文献
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云霄縣城关有九家理髮店,其中三家过去有附帶替群众治療皮膚病的习惯。該县卫生部门为了發挥民間医藥作用,特組織这些理发店具有治病技朮的理髮师們設立外科雜症医療室,專治各种紅白癬、生毛蛇、飛蛇疔、耳花、汗斑、鷄眼、香港脚等皮膚病。理髮师們在替群众理髮时,發現有皮膚雜病 相似文献
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