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   159664篇
  免费   10715篇
  国内免费   1244篇
耳鼻咽喉   2240篇
儿科学   3024篇
妇产科学   3745篇
基础医学   23794篇
口腔科学   3337篇
临床医学   15149篇
内科学   30296篇
皮肤病学   4323篇
神经病学   11954篇
特种医学   8109篇
外科学   21827篇
综合类   2154篇
现状与发展   5篇
一般理论   81篇
预防医学   9534篇
眼科学   4277篇
药学   13595篇
中国医学   1596篇
肿瘤学   12583篇
  2023年   756篇
  2022年   1481篇
  2021年   4817篇
  2020年   2466篇
  2019年   3583篇
  2018年   4402篇
  2017年   3233篇
  2016年   4188篇
  2015年   5634篇
  2014年   6911篇
  2013年   8369篇
  2012年   12646篇
  2011年   12280篇
  2010年   7257篇
  2009年   6076篇
  2008年   9259篇
  2007年   9145篇
  2006年   8379篇
  2005年   7985篇
  2004年   7123篇
  2003年   6188篇
  2002年   5376篇
  2001年   4384篇
  2000年   4029篇
  1999年   3265篇
  1998年   1327篇
  1997年   1002篇
  1996年   966篇
  1995年   870篇
  1994年   763篇
  1993年   661篇
  1992年   1573篇
  1991年   1572篇
  1990年   1357篇
  1989年   1245篇
  1988年   1161篇
  1987年   1032篇
  1986年   1014篇
  1985年   890篇
  1984年   648篇
  1983年   564篇
  1982年   400篇
  1981年   383篇
  1980年   349篇
  1979年   519篇
  1978年   406篇
  1977年   388篇
  1976年   344篇
  1974年   358篇
  1973年   325篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
71.
72.
While decreasing trend in gender differences in alcohol use disorders was reported in Western countries, the change in Asian countries is unknown. This study aims to explore the shifts in gender difference in alcohol abuse (AA) and dependence (AD) in Korea. We compared the data from two nation-wide community surveys to evaluate gender differences in lifetime AA and AD by Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV). Face-to-face interviews using the Composite International Diagnostic Interview (CIDI) were applied to all subjects in 2001 (n=6,220) and 2011 (n=6,022). Male-to-female ratio of odds was decreased from 6.41 (95% CI, 4.81-8.54) to 4.37 (95% CI, 3.35-5.71) for AA and from 3.75 (95% CI, 2.96-4.75) to 2.40 (95% CI, 1.80-3.19) for AD. Among those aged 18-29, gender gap even became statistically insignificant for AA (OR, 1.59; 95% CI, 0.97-2.63) and AD (OR, 1.18; 95% CI, 0.80-2.41) in 2011. Men generally showed decreased odds for AD (0.55; 95% CI, 0.45-0.67) and women aged 30-39 showed increased odds for AA (2.13; 95% CI 1.18-3.84) in 2011 compared to 2001. Decreased AD in men and increased AA in women seem to contribute to the decrease of gender gap. Increased risk for AA in young women suggests needs for interventions.  相似文献   
73.
74.

Background

Physicians treating nonvalvular atrial fibrillation (AF) assess stroke and bleeding risks when deciding on anticoagulation. The agreement between empirical and physician-estimated risks is unclear. Furthermore, the association between patient and physician sex and anticoagulation decision-making is uncertain.

Methods

We pooled data from 2 national primary care physician chart audit databases of patients with AF (Facilitating Review and Education to Optimize Stroke Prevention in Atrial Fibrillation and Coordinated National Network to Engage Physicians in the Care and Treatment of Patients with Atrial Fibrillation Chart Audit) with a combined 1035 physicians (133 female, 902 male) and 10,927 patients (4567 female and 6360 male).

Results

Male physicians underestimated stroke risk in female patients and overestimated risk in male patients. Female physicians estimated stroke risk well in female patients but underestimated the risk in male patients. Risk of bleeding was underestimated in all. Despite differences in risk assessment by physician and patient sex, > 90% of patients received anticoagulation across all subgroups. There was modest agreement between physician estimated and calculated (ie, CHADS2 score) stroke risk: Kappa scores were 0.41 (0.35-0.47) for female physicians and 0.34 (0.32-0.36) for male physicians.

Conclusions

Our study is the first to examine the association between patient and physician sex influences and stroke and bleeding risk estimation in AF. Although there were differences in agreement between physician estimated stroke risk and calculated CHADS2 scores, these differences were small and unlikely to affect clinical practice; further, despite any perceived differences in the accuracy of risk assessment by sex, most patients received anticoagulation.  相似文献   
75.
76.
77.
78.
79.
80.
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