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   22761篇
  免费   1953篇
  国内免费   213篇
耳鼻咽喉   203篇
儿科学   862篇
妇产科学   494篇
基础医学   2722篇
口腔科学   364篇
临床医学   2995篇
内科学   5123篇
皮肤病学   348篇
神经病学   2244篇
特种医学   756篇
外国民族医学   3篇
外科学   3834篇
综合类   201篇
一般理论   7篇
预防医学   1430篇
眼科学   979篇
药学   843篇
中国医学   14篇
肿瘤学   1505篇
  2021年   243篇
  2020年   221篇
  2019年   276篇
  2018年   398篇
  2017年   391篇
  2016年   437篇
  2015年   402篇
  2014年   567篇
  2013年   808篇
  2012年   857篇
  2011年   929篇
  2010年   684篇
  2009年   765篇
  2008年   776篇
  2007年   858篇
  2006年   871篇
  2005年   798篇
  2004年   783篇
  2003年   700篇
  2002年   735篇
  2001年   701篇
  2000年   650篇
  1999年   597篇
  1998年   348篇
  1997年   346篇
  1996年   427篇
  1995年   419篇
  1994年   337篇
  1993年   250篇
  1992年   538篇
  1991年   540篇
  1990年   469篇
  1989年   483篇
  1988年   446篇
  1987年   414篇
  1986年   447篇
  1985年   393篇
  1984年   351篇
  1983年   300篇
  1982年   225篇
  1981年   218篇
  1980年   214篇
  1979年   258篇
  1978年   245篇
  1977年   176篇
  1976年   181篇
  1975年   184篇
  1974年   195篇
  1973年   194篇
  1972年   167篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.

Background

Rapid treatment of agitation in the emergency department (ED) is critical to avoid injury to patients and providers. Treatment with intramuscular antipsychotics is often utilized, but there is a paucity of comparative effectiveness evidence available.

Objective

The purpose of this investigation was to compare the effectiveness of droperidol, olanzapine, and haloperidol for treating agitation in the ED.

Methods

This was a retrospective observational study of adult patients who received intramuscular medication to treat agitation. Patients were classified based on the initial antipsychotic they received. The primary effectiveness outcome was the rate of additional sedation administered (rescue medication) within 1 h. Secondary outcomes included rescue sedation for the entire encounter and adverse events.

Results

There were 15,918 patients included (median age 37 years, 75% male). Rescue rates at 1 h were: 547/4947 for droperidol (11%, 95% confidence interval [CI] 10–12%), 988/8825 olanzapine (11%, 95% CI 10–12%), and 390/2146 for haloperidol (18%, 95% CI 17–20%). Rescue rates for the entire ED encounter were: 832/4947 for droperidol (17%, 95% CI 16–18%), 1665/8825 for olanzapine (19%, 95% CI 18–20%), and 560/2146 for haloperidol (26%, 95% CI 24–28%). Adverse events were uncommon: intubation (49, 0.3%), akathisia (7, 0.04%), dystonia (5, 0.03%), respiratory arrest (1, 0.006%), and torsades de pointes (0), with no significant differences between drugs.

Conclusions

Olanzapine and droperidol lead to lower rates of rescue sedation at 1 h and overall, compared with haloperidol. There were no significant differences in major adverse events.  相似文献   
5.
6.
7.
8.
9.

Purpose

The objective of the study was to define factors associated with adolescent and young adult (AYA) experiences with private time and having discussed confidentiality and the impact of these experiences on improving delivery of clinical preventive services.

Methods

In 2016, a nationally representative sample of 1,918 US AYAs (13- to 26-year-olds) was surveyed. Survey questionnaire domains were based on prior research and Fishers' information-motivation-behavior skills conceptual model. Data were weighted to represent US households with AYA and analyzed to identify factors independently associated with ever experiencing private time and discussions of confidentiality with a regular health-care provider (HCP). We examined the association of these experiences on AYA attitudes about health care.

Results

Fifty-five percent of female and 49% of male AYA reported ever having had private time with an HCP and 55% of female and 44% of male AYA had spoken to an HCP about confidentiality. Independent predictors of having experienced private time and confidentiality included older age, race, higher household income, gender of the provider, amount of years with the provider, and involvement in risk behaviors. AYA who had experienced private time and confidentiality discussions had more positive attitudes about their providers, were more willing and comfortable discussing sensitive topics, and thought that these discussions should happen at younger ages.

Conclusions

Although confidentiality and private time are important to AYA, many are not experiencing these components of care. Providing private time and discussions of confidentiality can improve the delivery of health care for young people by enhancing positive youth attitudes about preventive care.  相似文献   
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