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   3742848篇
  免费   314013篇
  国内免费   14612篇
耳鼻咽喉   50822篇
儿科学   119448篇
妇产科学   98518篇
基础医学   583902篇
口腔科学   102859篇
临床医学   338684篇
内科学   664477篇
皮肤病学   98772篇
神经病学   313407篇
特种医学   147436篇
外国民族医学   264篇
外科学   581385篇
综合类   114079篇
现状与发展   24篇
一般理论   2400篇
预防医学   306262篇
眼科学   89367篇
药学   261637篇
  21篇
中国医学   11120篇
肿瘤学   186589篇
  2021年   49973篇
  2020年   35597篇
  2019年   58725篇
  2018年   73143篇
  2017年   55459篇
  2016年   61398篇
  2015年   75067篇
  2014年   109501篇
  2013年   175207篇
  2012年   106951篇
  2011年   109191篇
  2010年   121627篇
  2009年   124479篇
  2008年   95817篇
  2007年   100648篇
  2006年   109917篇
  2005年   104762篇
  2004年   106196篇
  2003年   95521篇
  2002年   84713篇
  2001年   135618篇
  2000年   128755篇
  1999年   119817篇
  1998年   62943篇
  1997年   59525篇
  1996年   57155篇
  1995年   58039篇
  1994年   52158篇
  1993年   48489篇
  1992年   84771篇
  1991年   81030篇
  1990年   76621篇
  1989年   75043篇
  1988年   68876篇
  1987年   67144篇
  1986年   63448篇
  1985年   62717篇
  1984年   54662篇
  1983年   49238篇
  1982年   43257篇
  1981年   40619篇
  1980年   38075篇
  1979年   44576篇
  1978年   37957篇
  1977年   34537篇
  1976年   31632篇
  1975年   30552篇
  1974年   32304篇
  1973年   31046篇
  1972年   28986篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
85.
86.

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   
87.
88.
89.
90.
This paper examines the propagation of COVID-19 across the Spanish provinces and assesses the effectiveness of the Spanish lockdown of the population implemented on March 14, 2020 in order to battle this pandemic. To achieve these objectives, a standard spatial econometric model used in economics is adapted to resemble the popular reproduction models employed in the epidemiological literature. In addition, we introduce a counterfactual exercise that allows us to examine the Gross domestic product (GDP) gains of bringing forward the date of the Spanish Lockdown. We find that the number of COVID-19 cases would have been reduced by 70.4% in the absence of spatial propagation between the Spanish provinces. We also determine that the lockdown prevented the propagation of the virus within and between provinces. As such, the Spanish lockdown reduced the number of potential COVID-19 cases by 82.8%. However, the number of coronavirus cases would have been reduced by an additional 11.6% if the lockdown had been brought forward to March 7, 2020. Finally, an earlier lockdown would have saved approximately 26,900,000,000 euros.  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