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基于年龄变量分组的保健酒消费行为差异研究
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作者 王欣睿 孔睿敏 +1 位作者 张军鸣 徐绍荣 《酿酒科技》 2021年第6期137-142,共6页
为了比较不同年龄段消费者保健酒消费行为的差异,本研究针对山东省内饮用过保健酒的城镇居民展开问卷调查,具体内容包括消费者性别、年龄等个人特征变量及消费者保健酒文化认知情况、饮用频率、单次饮用量、饮用时间、饮用评价等信息,... 为了比较不同年龄段消费者保健酒消费行为的差异,本研究针对山东省内饮用过保健酒的城镇居民展开问卷调查,具体内容包括消费者性别、年龄等个人特征变量及消费者保健酒文化认知情况、饮用频率、单次饮用量、饮用时间、饮用评价等信息,共取得有效样本630个。根据所得数据,将样本消费者按照年龄变量分成5组,进行消费行为差异分析。结果表明,不同年龄段的消费者在保健酒文化认知水平、饮用频率、单次饮用量、饮用时间、饮用评价等方面存在显著差异,且随着年龄的增长,消费者保健酒消费行为特征变量呈递增趋势。 展开更多
关键词 保健酒 消费行为 年龄变量 山东省
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基于胸部高分辨CT的深度学习影像组学对特发性肺纤维化GAP分期的预测价值
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作者 甄涛 胡大成 +1 位作者 姚伟 沈起钧 《浙江医学》 CAS 2023年第18期1921-1926,1931,共7页
目的探讨基于胸部高分辨CT(HRCT)的深度学习影像组学模型对特发性肺纤维化(IPF)性别-年龄-肺生理变量(GAP)分期的预测价值。方法回顾2020年1月至2022年6月浙江大学医学院附属杭州市第一人民医院诊断为IPF的患者67例,根据GAP分期系统分... 目的探讨基于胸部高分辨CT(HRCT)的深度学习影像组学模型对特发性肺纤维化(IPF)性别-年龄-肺生理变量(GAP)分期的预测价值。方法回顾2020年1月至2022年6月浙江大学医学院附属杭州市第一人民医院诊断为IPF的患者67例,根据GAP分期系统分成早期IPF(GAPⅠ期)40例和中晚期IPF(GAPⅡ/Ⅲ期)27例,所有患者均行胸部HRCT检查,在联影智能科研平台上的深度学习模块,基于V-net网络进行图像自动分割,同时与人工分割比较,用Dice相似性系数(DSC)评估分割模型的效能。基于自动分割结果,在影像组学模块进行影像组学分析,得到影像组学特征值,通过最小绝对紧缩与选择算子(LASSO)回归筛选组学特征,并基于筛选出的特征系数计算每例患者的影像组学标签(Radscore),基于Radscore构建影像组学模型。采用ROC曲线评估影像组学模型对GAP分期的预测效能。结果基于V-net网络的肺间质性病变的自动分割模型显示了较好的分割效能,其DSC为0.55~0.93(0.83±0.10)。影像组学分析共得到2400个组学特征,通过LASSO回归筛选出了8个组学特征,同时计算得到Radscore值。基于Radscore构建的影像组学模型对IPF的GAP分期显示了较好的预测效能,训练组AUC为0.862(95%CI:0.740~0.941),灵敏度为0.783,特异度为0.833,准确度为0.811;验证组AUC为0.854(95%CI:0.568~0.981),灵敏度为0.833,特异度为0.875,准确度为0.857。结论深度学习V-net网络在肺间质性病变的自动分割方面有较高的分割效能,通过基于胸部HRCT的影像组学模型有望成为IPF临床分期的新定量指标,为临床医师提供合理的诊疗决策。 展开更多
关键词 特发性肺纤维化 深度学习 影像组学 计算机断层摄影 性别-年龄-肺生理变量分期
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试论当前少儿动漫图书出版的营销管理 被引量:1
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作者 齐心 《出版广角》 北大核心 2012年第8期64-65,共2页
动漫产业已成为我国重点扶持的领域。少儿动漫图书的出版作为我国动漫产业的重要组成部分,已迈入更为科学、系统的发展阶段。以营销管理理念为指导,从市场细分入手,将营销组合策略融入少儿动漫图书出版的各个环节,对推动动漫出版的发展... 动漫产业已成为我国重点扶持的领域。少儿动漫图书的出版作为我国动漫产业的重要组成部分,已迈入更为科学、系统的发展阶段。以营销管理理念为指导,从市场细分入手,将营销组合策略融入少儿动漫图书出版的各个环节,对推动动漫出版的发展及健全动漫市场有着重要的意义。 展开更多
关键词 少儿动漫图书 市场机遇 年龄变量 市场营销组合
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Acute diverticulitis in younger patients:Any rationale for a different approach?
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作者 Gil R Faria Ana B Almeida +3 位作者 Herculano Moreira Joo Pinto-de-Sousa Pedro Correia-da-Silva Amadeu P Pimenta 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第2期207-212,共6页
AIM:To compare the natural history and course of acute diverticulitis in a younger age group with an older population and to evaluate whether younger patients should be managed differently. METHODS:This study was a re... AIM:To compare the natural history and course of acute diverticulitis in a younger age group with an older population and to evaluate whether younger patients should be managed differently. METHODS:This study was a retrospective review of 157 patients treated with acute diverticulitis between January 1,2004 and December 31,2007.Diverticulitis was stratified according to the Hinchey classification. Patients were divided into 2 populations:group A≤ 50 years(n=31) ;group B>50 years(n=126) .Mean patient follow-up was 15 mo. RESULTS:The median age was 60 years.A significantly higher proportion of patients in group B presented with complicated diverticulitis(36.5%vs 12.9%,P=0.01) .Recurrence was more frequent in group A(25.8%vs 11.1%,P=0.03) and the mean time-torecurrence was shorter(12 mo vs 28 mo,P=0.26) . The most severe recurrent episodes of acute diverticulitis were classified as Hinchey stageⅠand none of the patients required emergency surgery.In multivariate analysis,only age(P=0.024) was identified as an independent prognostic factor for recurrence. CONCLUSION:Based on the results of this study,we recommend that diverticulitis management should be based on the severity of the disease and not on the age of the patient. 展开更多
关键词 Acute diverticulitis RECURRENCE Age factors SEVERITY Surgical treatment
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What the Hell Am I Doing Here? A Look at a Series of Geriatric Centers, Profile of the Institutionalized Persons and Reasons for Admission
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作者 Pascual Lopez, Jose A. Rodriguez Lavado, Paula +2 位作者 Garcia Jimenez, Catalina Martinez Valero, Francisco J. Aracil Femeindez, Javier 《Journal of Life Sciences》 2017年第1期47-52,共6页
The main objective of this study was always to know the profile of the institutionalized people in our environment, to know their reality: age, age of admission, level of dependency and evolution during their stay, y... The main objective of this study was always to know the profile of the institutionalized people in our environment, to know their reality: age, age of admission, level of dependency and evolution during their stay, years of stay, number of children, reason for admission. We use data from more than 600 patients from different residences of different backgrounds: public and private, lay and religious, rural and urban. We performed a descriptive study expressing the results in percentages with standard deviation and later evaluated the statistical significance of the differences using the student's t-test for the quantitative and Chi-square variables to compare qualitative variables. The results of the study are numerous and of diverse nature, because of their extension, from the general profile of the resident, to the important gender differences, attributed in principle to the different roles of each gender in the studied generations. There are also differences depending on the funding, the reason for admission or the environment. This is at the end only the beginning of a large comparative study with non-institutionalized population, in order to compare this population. 展开更多
关键词 Geriatric assessment aged housing of the elderly patient admission healthcare financing environment sex.
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