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   3494277篇
  免费   271591篇
  国内免费   6819篇
耳鼻咽喉   49692篇
儿科学   111787篇
妇产科学   94654篇
基础医学   491714篇
口腔科学   103035篇
临床医学   318675篇
内科学   674852篇
皮肤病学   74837篇
神经病学   284094篇
特种医学   136394篇
外国民族医学   1084篇
外科学   529401篇
综合类   83816篇
现状与发展   5篇
一般理论   1394篇
预防医学   276369篇
眼科学   83905篇
药学   261581篇
  11篇
中国医学   7283篇
肿瘤学   188104篇
  2018年   37571篇
  2017年   28716篇
  2016年   31768篇
  2015年   35997篇
  2014年   51165篇
  2013年   76933篇
  2012年   104766篇
  2011年   110745篇
  2010年   65587篇
  2009年   61946篇
  2008年   104128篇
  2007年   110937篇
  2006年   111881篇
  2005年   108539篇
  2004年   104511篇
  2003年   100095篇
  2002年   97872篇
  2001年   166526篇
  2000年   171595篇
  1999年   143892篇
  1998年   38784篇
  1997年   34265篇
  1996年   33979篇
  1995年   34930篇
  1994年   32646篇
  1993年   30252篇
  1992年   114664篇
  1991年   111144篇
  1990年   107226篇
  1989年   103558篇
  1988年   95603篇
  1987年   93923篇
  1986年   88778篇
  1985年   84721篇
  1984年   63712篇
  1983年   54215篇
  1982年   32083篇
  1981年   28621篇
  1979年   58663篇
  1978年   40956篇
  1977年   34743篇
  1976年   32535篇
  1975年   34367篇
  1974年   42342篇
  1973年   40407篇
  1972年   37861篇
  1971年   34959篇
  1970年   32828篇
  1969年   30551篇
  1968年   28059篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
41.
42.

Objective

The aim was to identify healthcare payment and financing reforms to promote health equity and ways that the Agency for Healthcare Research and Quality (AHRQ) may promote those reforms.

Data Sources and Study Setting

AHRQ convened a payment and financing workgroup–the authors of this paper–as part of its Health Equity Summit held in July 2022. This workgroup drew from its collective experience with healthcare payment and financing reform, as well as feedback from participants in a session at the Health Equity Summit, to identify the evidence base and promising paths for reforms to promote health equity.

Study Design

The payment and financing workgroup developed an outline of reforms to promote health equity, presented the outline to participants in the payment and financing session of the July 2022 AHRQ Health Equity Summit, and integrated feedback from the participants.

Data Collection/Extraction Methods

This paper did not require novel data collection; the authors collected the data from the existing evidence base.

Principal Findings

The paper outlines root causes of health inequity and corresponding potential reforms in five domains: (1) the differential distribution of resources between healthcare providers serving different communities, (2) scarcity of financing for populations most in need, (3) lack of integration/accountability, (4) patient cost barriers to care, and (5) bias in provider behavior and diagnostic tools.

Conclusions

Additional research is necessary to determine whether the proposed reforms are effective in promoting health equity.  相似文献   
43.
44.
45.
46.
47.
Brandt  L.  Albert  S.  Brandt  K. L. 《Der Anaesthesist》2022,71(11):858-864
Die Anaesthesiologie - Als Meralgia paraesthetica (MP) bezeichnet man eine zu den neurologischen Engpasssyndromen zählende Schädigung des aus dem Plexus lumbalis entspringenden sensiblen...  相似文献   
48.
Delirium is one of the most commonly occurring postoperative complications in older adults. It occurs due to the vulnerability of cerebral functioning to pathophysiological stressors. Identification of those at increased risk of developing delirium early in the surgical pathway provides an opportunity for modification of predisposing and precipitating risk factors and effective shared decision-making. No single delirium prediction tool is used widely in surgical settings. Multi-component interventions to prevent delirium involve structured risk factor modification supported by geriatrician input; these are clinically efficacious and cost effective. Barriers to the widespread implementation of such complex interventions exist, resulting in an ‘implementation gap’. There is a lack of evidence for pharmacological prophylaxis for the prevention of delirium. Current evidence suggests that avoidance of peri-operative benzodiazepines, careful titration of anaesthetic depth guided by processed electroencephalogram monitoring and treatment of pain are the most effective strategies to minimise the risk of delirium. Addressing postoperative delirium requires a collaborative, whole pathway approach, beginning with the early identification of those patients who are at risk. The research agenda should continue to examine the potential for pharmacological prophylaxis to prevent delirium while also addressing how successful models of delirium prevention can be translated from one setting to another, underpinned by implementation science methodology.  相似文献   
49.
50.
PurposeUnderstanding the value of genetic screening and testing for monogenic disorders requires high-quality, methodologically robust economic evaluations. This systematic review sought to assess the methodological quality among such studies and examined opportunities for improvement.MethodsWe searched PubMed, Cochrane, Embase, and Web of Science for economic evaluations of genetic screening/testing (2013-2019). Methodological rigor and adherence to best practices were systematically assessed using the British Medical Journal checklist.ResultsAcross the 47 identified studies, there were substantial variations in modeling approaches, reporting detail, and sophistication. Models ranged from simple decision trees to individual-level microsimulations that compared between 2 and >20 alternative interventions. Many studies failed to report sufficient detail to enable replication or did not justify modeling assumptions, especially for costing methods and utility values. Meta-analyses, systematic reviews, or calibration were rarely used to derive parameter estimates. Nearly all studies conducted some sensitivity analysis, and more sophisticated studies implemented probabilistic sensitivity/uncertainty analysis, threshold analysis, and value of information analysis.ConclusionWe describe a heterogeneous body of work and present recommendations and exemplar studies across the methodological domains of (1) perspective, scope, and parameter selection; (2) use of uncertainty/sensitivity analyses; and (3) reporting transparency for improvement in the economic evaluation of genetic screening/testing.  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