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   6797篇
  免费   660篇
  国内免费   10篇
耳鼻咽喉   83篇
儿科学   210篇
妇产科学   170篇
基础医学   967篇
口腔科学   84篇
临床医学   898篇
内科学   1274篇
皮肤病学   122篇
神经病学   893篇
特种医学   165篇
外科学   720篇
综合类   72篇
一般理论   7篇
预防医学   830篇
眼科学   140篇
药学   424篇
中国医学   4篇
肿瘤学   404篇
  2023年   131篇
  2022年   86篇
  2021年   408篇
  2020年   255篇
  2019年   355篇
  2018年   346篇
  2017年   276篇
  2016年   290篇
  2015年   250篇
  2014年   330篇
  2013年   450篇
  2012年   541篇
  2011年   548篇
  2010年   264篇
  2009年   225篇
  2008年   349篇
  2007年   323篇
  2006年   309篇
  2005年   274篇
  2004年   234篇
  2003年   244篇
  2002年   195篇
  2001年   54篇
  2000年   40篇
  1999年   41篇
  1998年   35篇
  1997年   20篇
  1996年   15篇
  1995年   18篇
  1994年   15篇
  1993年   17篇
  1992年   19篇
  1991年   29篇
  1990年   34篇
  1989年   31篇
  1988年   36篇
  1987年   22篇
  1986年   24篇
  1985年   23篇
  1984年   25篇
  1983年   20篇
  1982年   13篇
  1981年   12篇
  1979年   19篇
  1978年   24篇
  1975年   16篇
  1974年   16篇
  1973年   13篇
  1972年   16篇
  1969年   15篇
排序方式: 共有7467条查询结果,搜索用时 109 毫秒
1.
Journal of Thrombosis and Thrombolysis - Multidisciplinary pulmonary embolism (PE) response teams have garnered widespread adoption given the complexities of managing acute PE and provide a...  相似文献   
2.
3.
4.
5.
6.
Few studies have examined the effects of parental incarceration (PI) on outcomes above and beyond other risk and adverse childhood experiences (ACEs). The objectives of this study were to (1) the associations between PI and mental health problems (attention, externalizing, internalizing, and total behavioral problems) and (2) the mediating role of current socioeconomic status and cumulative ACEs. An observational and cross-sectional design was employed. Analyses included hierarchical multivariable linear regression modeling. The analytic sample included 613 adolescents (11–17?years). On average, youth exposed to PI experienced three times as many ACEs compared with youth unexposed. Youth exposed to PI were more likely to have behavioral problems than their unexposed peers. The main effect for all models was attenuated by current economic hardship as well as exposure to increasing numbers of ACEs. Exposure to PI can be viewed as a marker of accumulative risk for intervention since youth impacted by PI are more likely to experience behavioral difficulties and associated adverse childhood experiences. Due to the associated adversity that impact youth exposed to PI, mental health providers need to be able to identify and screen for symptoms associated with trauma.  相似文献   
7.

Objective

Large reductions in inpatient length of stay and inpatient bed supply have occurred across health systems in recent years. However, the direction of causation between length of stay and bed supply is often overlooked. This study examines the impact of changes to inpatient bed supply, as a result of recession-induced healthcare expenditure changes, on emergency inpatient length of stay in Ireland between 2010 and 2015.

Study design

We analyse all public hospital emergency inpatient discharges in Ireland from 2010 to 2015 using the administrative Hospital In-Patient Enquiry dataset. We use changes to inpatient bed supply across hospitals over time to examine the impact of bed supply on length of stay. Linear, negative binomial, and hospital–month-level fixed effects models are estimated.

Results

U-shaped trends are observed for both average length of stay and inpatient bed supply between 2010 and 2015. A consistently large positive relationship is found between bed supply and length of stay across all regression analyses. Between 2010 and 2012 while length of stay fell by 6.4%, our analyses estimate that approximately 42% (2.7% points) of this reduction was associated with declines in bed supply.

Conclusion

Changes in emergency inpatient length of stay in Ireland between 2010 and 2015 were closely related to changes in bed supply during those years. The use of length of stay as an efficiency measure should be understood in the contextual basis of other health system changes. Lower length of stay may be indicative of the lack of resources or available bed supply as opposed to reduced demand for care or the shifting of care to other settings.

  相似文献   
8.
9.
10.
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