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   159666篇
  免费   10715篇
  国内免费   1215篇
耳鼻咽喉   2241篇
儿科学   3033篇
妇产科学   3742篇
基础医学   23797篇
口腔科学   3336篇
临床医学   15139篇
内科学   30269篇
皮肤病学   4320篇
神经病学   11957篇
特种医学   8115篇
外科学   21819篇
综合类   2163篇
现状与发展   5篇
一般理论   81篇
预防医学   9535篇
眼科学   4277篇
药学   13588篇
中国医学   1597篇
肿瘤学   12582篇
  2023年   757篇
  2022年   1481篇
  2021年   4817篇
  2020年   2467篇
  2019年   3586篇
  2018年   4401篇
  2017年   3231篇
  2016年   4187篇
  2015年   5639篇
  2014年   6911篇
  2013年   8373篇
  2012年   12644篇
  2011年   12276篇
  2010年   7254篇
  2009年   6069篇
  2008年   9256篇
  2007年   9123篇
  2006年   8385篇
  2005年   7987篇
  2004年   7119篇
  2003年   6189篇
  2002年   5376篇
  2001年   4381篇
  2000年   4031篇
  1999年   3266篇
  1998年   1330篇
  1997年   1013篇
  1996年   962篇
  1995年   875篇
  1994年   768篇
  1993年   651篇
  1992年   1576篇
  1991年   1571篇
  1990年   1358篇
  1989年   1243篇
  1988年   1162篇
  1987年   1034篇
  1986年   1016篇
  1985年   885篇
  1984年   644篇
  1983年   564篇
  1982年   400篇
  1981年   383篇
  1980年   339篇
  1979年   521篇
  1978年   407篇
  1977年   392篇
  1976年   342篇
  1974年   356篇
  1973年   325篇
排序方式: 共有10000条查询结果,搜索用时 31 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