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   38823篇
  免费   3146篇
  国内免费   393篇
耳鼻咽喉   439篇
儿科学   1065篇
妇产科学   1035篇
基础医学   5028篇
口腔科学   645篇
临床医学   4048篇
内科学   8347篇
皮肤病学   875篇
神经病学   2635篇
特种医学   1251篇
外科学   5452篇
综合类   1263篇
一般理论   33篇
预防医学   2111篇
眼科学   1715篇
药学   2878篇
中国医学   338篇
肿瘤学   3204篇
  2023年   263篇
  2022年   460篇
  2021年   1045篇
  2020年   671篇
  2019年   884篇
  2018年   1097篇
  2017年   833篇
  2016年   963篇
  2015年   1152篇
  2014年   1528篇
  2013年   1798篇
  2012年   2590篇
  2011年   2720篇
  2010年   1542篇
  2009年   1338篇
  2008年   2117篇
  2007年   2188篇
  2006年   2203篇
  2005年   2133篇
  2004年   1878篇
  2003年   1730篇
  2002年   1560篇
  2001年   1224篇
  2000年   1146篇
  1999年   973篇
  1998年   389篇
  1997年   290篇
  1996年   257篇
  1995年   211篇
  1994年   196篇
  1993年   196篇
  1992年   482篇
  1991年   469篇
  1990年   447篇
  1989年   426篇
  1988年   383篇
  1987年   390篇
  1986年   349篇
  1985年   286篇
  1984年   215篇
  1983年   159篇
  1982年   98篇
  1981年   91篇
  1980年   93篇
  1979年   140篇
  1978年   93篇
  1977年   73篇
  1976年   79篇
  1975年   81篇
  1972年   72篇
排序方式: 共有10000条查询结果,搜索用时 296 毫秒
1.
2.
3.
4.
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs.  相似文献   
5.
Abstract

Objective

Ras wild-type metastatic colorectal cancers (mCRC) may be treated with anti-vascular endothelial growth factor (VEGF) or anti-epidermal growth factor receptor (EGFR) agents. We aim to estimate patients’ preferences for mCRC treatment and relative importance of cost, efficacy improvement, avoidance of side effects and therapy convenience, and relative uptake between profiles that resemble Bevacizumab (anti-VEGF) and Cetuximab (anti-EGFR), two commonly prescribed mCRC targeted therapies.  相似文献   
6.
INTRODUCTIONPsoriasis is a chronic inflammatory condition that affects the skin and joints, and is associated with cardiovascular risk factors, including metabolic syndrome (MetS). We aimed to assess the prevalence of MetS in patients with psoriasis and determine whether there was a correlation between psoriasis severity and MetS in a Singapore population.METHODSThis was a cross-sectional study of patients with psoriasis, aged 18–69 years, who attended a tertiary dermatology referral centre in Singapore from October 2007 to February 2009. Fasting glucose, lipids, blood pressure, Psoriasis Area and Severity Index, and body mass index were measured. MetS was diagnosed in the presence of three or more criteria of the modified National Cholesterol Education Program Adult Treatment Panel III.RESULTSAmong 338 patients with psoriasis, there were 238 (70.4%) men and 100 (29.6%) women, who were Chinese (n = 228; 67.5%), Malay (n = 52; 15.4%) and Indian (n = 58; 17.2%). The prevalence of MetS was 45.1%. MetS was 44% more prevalent in patients older than 50 years (p = 0.02). Malay patients with psoriasis were significantly more likely to have hypertriglyceridaemia, elevated fasting plasma glucose and abdominal obesity. There was no significant correlation between psoriasis severity and risk of MetS.CONCLUSIONThe prevalence of MetS in patients with psoriasis in Singapore was 45.1%, or nearly threefold higher than the Singapore general population. Patients with psoriasis should be screened yearly for MetS and any modifiable cardiovascular risk factors should be actively controlled.  相似文献   
7.
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