首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   366篇
  免费   30篇
  国内免费   8篇
儿科学   4篇
妇产科学   1篇
基础医学   8篇
口腔科学   3篇
临床医学   20篇
内科学   15篇
皮肤病学   2篇
特种医学   4篇
外科学   11篇
综合类   88篇
预防医学   170篇
眼科学   8篇
药学   37篇
中国医学   31篇
肿瘤学   2篇
  2023年   5篇
  2022年   10篇
  2021年   15篇
  2020年   14篇
  2019年   6篇
  2018年   6篇
  2017年   2篇
  2016年   7篇
  2015年   8篇
  2014年   52篇
  2013年   27篇
  2012年   67篇
  2011年   46篇
  2010年   46篇
  2009年   18篇
  2008年   12篇
  2007年   16篇
  2006年   11篇
  2005年   6篇
  2004年   4篇
  2003年   5篇
  2002年   2篇
  2001年   5篇
  2000年   5篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
  1994年   2篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
排序方式: 共有404条查询结果,搜索用时 46 毫秒
1.
目的 对2014-2016年在甘肃省和政县开展的白内障综合防盲干预项目进行卫生经济学评价。设计 横断面调查。 研究对象 甘肃省和政县2014-2016年老年性白内障手术前407例患者及术后半年109例患者。方法 对所有调查对象进行卫生经济学问卷调查。通过净效益法、成本效益分析法和成本效果分析法评价项目产生的经济效益和总成本。主要指标 直接成本、间接成本、直接经济效益、间接经济效益、总成本、总效益、净效益、成本效益比、成本效果比。结果 2014-2016年项目期间甘肃省和政县白内障所致总体疾病经济负担为2142.28万元。白内障手术产生的总效益为3398424.98元,总成本为2939125.20元,净效益为459299.78元,效益成本比为1.16:1。项目每投入1万元可降低50岁以上白内障患者导致的0.027%的致盲率和0.164%致残率;项目每降低1%的50岁以上白内障患者的盲率,需投入36.47万元;每降低1%50岁以上白内障患者的残率,需投入6.11万元。结论 在甘肃省和政县开展的老年性白内障防盲综合干预项目具有较好的产出回报比和较高的防盲技术效率。(眼科,2020,29: 298-303)  相似文献   
2.
通过文献研究、问卷调查、专家访谈、现地调研等方法,分析医院离退休干部参与社会治理的现状及影响因素,探讨社区对离退休干部参与社会治理的需求,提出通过党建引领医院离退休干部参与社会治理的“1235”模式,并给出具体的操作路径,以期为推动医院离退休干部积极参与社会治理提供参考。  相似文献   
3.
目的探讨上海市静安区涂阳肺结核患者治疗结果的流行病学情况及其影响因素,为更加有效地促进结核病防治工作提供依据。方法调查本区户籍在2005年至2007年上半年间被确诊登记并进行治疗的全部肺结核病例,采用SPSS 11.0统计软件进行数据分析。结果60岁及以上的患者治愈率明显低于60岁以下的患者。职业类别分析以离退休治愈率最低,其次是待业患者的治愈率。无合并症患者治愈率明显高于有合并症者。结论年龄、职业、合并其他疾病,是影响肺结核治疗的主要因素。应对重点人群——老年人和待业人员及有合并症的患者加强督导管理,并采取有针对性的治疗方案,同时开展形式多样的健康促进活动,有助于提高结核病控制和管理水平。  相似文献   
4.
目的 观察慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)合并哮喘大鼠模型气道炎症的变化及补肾益气中药对大鼠气道炎症的干预作用。  相似文献   
5.
刺络拔罐法对减低中风后上肢肌张力增高的临床研究   总被引:12,自引:0,他引:12  
目的 观察刺络拔罐法对脑血管意外患者肌张力增高的改善情况。方法 将已出现肌张力增高的脑血管意外患者6 2例 ,随机分为刺络拔罐组 31例、对照组 31例。结果 刺络拔罐组在治疗后的肌张力较治疗前有显著降低 (P<0 .0 0 1) ,并且疗效优于对照组 (P<0 .0 5 )。结论 刺络拔罐法可显著改善脑血管意外患者肌张力增高的情况。  相似文献   
6.
AIM: To investigate the Chinese version of the Low Vision Quality of Life Questionnaire (CLVQOL) as an instrument for obtaining clinically important changes after cataract surgery. METHODS: Patients underwent cataract surgery in Shanghai General Hospital, Shanghai Jiao Tong University, who fit the inclusion criteria were recruited. Two CLVQOLs were administered, including a preoperative CLVQOL and a CLVQOL at the end of the 3mo follow-up period, and were completed using face-to-face interviews or phone interviews conducted by trained investigators. The minimal clinically important difference (MCID) was calculated using an anchor-based method and a distribution method. In addition, the responsiveness of the questionnaire was measured. RESULTS: A total of 155 residents were enrolled. The average visual acuity (VA) preoperatively was 0.08 (SD=0.05), and it increased to 0.47 (SD=0.28) at the end of follow-up. Statistically significant positive changes in the CLVQOL scores indicated significant improvement of vision related quality of life after cataract surgery. With the larger value between the two results as the final value, the MCID values of the CLVQOL (scores of the four scales as well as the total score) were 8.94, 2.61, 4.34, 3.10 and 17.63, respectively. The CLVQOL has both good internal and external responsiveness. CONCLUSION: CLVQOL scores are appropriate instruments for obtaining clinically important changes after cataract surgery. This study is an effective exploration for establishing cataract surgery efficacy standards, which helps clinical and scientific research workers in ophthalmology to gain a more in-depth understanding when using CLVQOL.  相似文献   
7.
Regional healthcare platforms collect clinical data from hospitals in specific areas for the purpose of healthcare management. It is a common requirement to reuse the data for clinical research. However, we have to face challenges like the inconsistence of terminology in electronic health records (EHR) and the complexities in data quality and data formats in regional healthcare platform. In this paper, we propose methodology and process on constructing large scale cohorts which forms the basis of causality and comparative effectiveness relationship in epidemiology. We firstly constructed a Chinese terminology knowledge graph to deal with the diversity of vocabularies on regional platform. Secondly, we built special disease case repositories (i.e., heart failure repository) that utilize the graph to search the related patients and to normalize the data. Based on the requirements of the clinical research which aimed to explore the effectiveness of taking statin on 180-days readmission in patients with heart failure, we built a large-scale retrospective cohort with 29647 cases of heart failure patients from the heart failure repository. After the propensity score matching, the study group (n=6346) and the control group (n=6346) with parallel clinical characteristics were acquired. Logistic regression analysis showed that taking statins had a negative correlation with 180-days readmission in heart failure patients. This paper presents the workflow and application example of big data mining based on regional EHR data.  相似文献   
8.
Background and aimsThe association between isoflavone (ISF) consumption and cardiovascular disease (CVD) remains controversial because of limited evidence. Carotid atherosclerosis is an established indicator of subclinical CVD. The study aimed to investigate the relationship between dietary ISF intake and subclinical CVD in middle-aged and elderly adults.Methods and resultsA total of 873 subjects aged 40–70 years without CVD were enrolled in this cross-sectional study. A restricted cubic spline was used to investigate the association between ISF intake and subclinical CVD risk. The odds ratio (OR) and 95% confidence interval of the risk of subclinical CVD for ISF were estimated by two-segmented logistic regression analysis. In Model 2, there was a non-linear association between ISF intake and the risk of subclinical CVD among women (Pnon-linear = 0.002), with an inverse association below the change point. The nadir for the risk of subclinical CVD among women was 7.26 mg/day (energy-adjusted). Below the change point, an increase of 1 mg ISF/day reduced the risk of subclinical CVD by 15%. There was no significant association between ISF intake and subclinical CVD risk above the change point (OR = 1.01 [0.99, 1.04]). ISF intake was not associated with subclinical CVD risk in men (Model 2: Pnon-linear = 0.224).ConclusionsBelow the change point (7.26 mg/day), women with a higher intake of ISF had a significantly lower risk of subclinical CVD. Encouraging the consumption of ISF-rich foods may help to lower CVD risk in middle-aged and elderly women.Trial registrationThis study is registered at http://www.chictr.org.cn (ChiCTR 1900022445).  相似文献   
9.
目的调查白天过度嗜睡症(EDS)在社区低龄老年人中的发生率及探讨相关因素。方法对989例社区低龄老年人采用国际通用的Epworth嗜睡量表(ESS)进行调查,收回有效问卷910份,有效回收率为92.0%,对影响EDS的因素采用多元逐步回归分析。结果社区低龄老年人ESS评分为(4.1±0.1)分,以ESS评分≥8分为EDS,社区低龄老年人EDS的发生率为6.0%。以EDS为应变量,经多元逐步回归分析,独睡一床、夜间观看电视时间过长、习惯性打鼾、入睡困难4个因素进入回归模型,相对危险度分别为2.215、3.442、1.778、1.784(P<0.05)。结论低龄老年人独睡一床、夜间观看电视时间过长、习惯性打鼾、入睡困难是独立于老年人年龄、性别、家庭经济状况、睡眠时间、早醒等因素以外导致老年人EDS的相关因素。  相似文献   
10.
近年来我国研究者发起的临床研究(ⅡT)项目数量快速增长,对ⅡT项目规范化实施提出了全新要求。本研究在国内外临床研究法规框架下,结合ⅡT项目实施过程质量评估工作实践探索了一套基本流程,主要包括质量评估前准备、项目组自评估、中心化核查、现场核查、撰写报告、综合评估,为提高ⅡT项目质量提供参考和借鉴。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号