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   180220篇
  免费   21867篇
  国内免费   2535篇
耳鼻咽喉   5436篇
儿科学   5790篇
妇产科学   2530篇
基础医学   5167篇
口腔科学   1958篇
临床医学   27762篇
内科学   52780篇
皮肤病学   7743篇
神经病学   16214篇
特种医学   7184篇
外科学   44173篇
综合类   300篇
现状与发展   72篇
一般理论   1篇
预防医学   7483篇
眼科学   3612篇
药学   2111篇
  2篇
中国医学   48篇
肿瘤学   14256篇
  2024年   807篇
  2023年   5270篇
  2022年   1735篇
  2021年   3676篇
  2020年   6350篇
  2019年   2554篇
  2018年   7847篇
  2017年   7694篇
  2016年   8819篇
  2015年   8804篇
  2014年   15969篇
  2013年   16271篇
  2012年   6475篇
  2011年   6655篇
  2010年   10936篇
  2009年   14747篇
  2008年   6799篇
  2007年   5200篇
  2006年   7570篇
  2005年   4909篇
  2004年   4194篇
  2003年   3052篇
  2002年   3164篇
  2001年   4090篇
  2000年   3316篇
  1999年   3515篇
  1998年   3933篇
  1997年   3661篇
  1996年   3558篇
  1995年   3384篇
  1994年   2116篇
  1993年   1739篇
  1992年   1553篇
  1991年   1599篇
  1990年   1223篇
  1989年   1336篇
  1988年   1140篇
  1987年   966篇
  1986年   985篇
  1985年   783篇
  1984年   618篇
  1983年   582篇
  1982年   567篇
  1981年   439篇
  1980年   401篇
  1979年   359篇
  1978年   365篇
  1977年   423篇
  1975年   298篇
  1972年   324篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
94.
95.
96.

Background

Although the Oxford Hip Score has been translated and validated in several languages, there is currently no Chinese version of the outcomes measurement. Our study aims to crossculturally adapt and validate the Oxford Hip Score into a simplified Chinese version.

Questions/purposes

We tested the (1) reliability; (2) validity; and (3) responsiveness of the Chinese version of the Oxford Hip Score.

Methods

First we translated the Oxford Hip Score into simplified Chinese, then back into English, then held a consensus meeting to achieve the final simplified Chinese version. Then we evaluated the psychometric properties of Chinese version of the Oxford Hip Score in patients undergoing total hip arthroplasty (THA). All patients undergoing THA between July and December 2012 were invited to participate in this study; a total of 108 (79% of 136 invited) did so. To assess the test-retest validity, all participants completed the Chinese version of the Oxford Hip Score again with a 2-week interval. Pearson correlation coefficient was used to evaluate the construct validity between the Chinese version of the Oxford Hip Score and visual analog scale (VAS), Harris hip score, and eight individual domains of the SF-36. Responsiveness was demonstrated by comparing the pre- and postoperative scores of the Chinese version of the Oxford Hip Score.

Results

The test-retest reliability with intraclass correlation coefficient (0.937) and internal consistency with Cronbach’s alpha (0.91) were excellent. The Chinese version of the Oxford Hip Score correlated with the Harris hip score (0.89, p < 0.01), VAS (−0.79, p < 0.01), and Physical Functioning (0.79, p < 0.01) and Bodily Pain (0.70, p < 0.01) domains of SF-36, which suggested construct validity. No floor or ceiling effects were found. The effect size and standardized response mean values were 3.52 and 3.31, respectively, indicating good responsiveness.

Conclusions

The Chinese version of the Oxford Hip Score showed good reliability, validity, and responsiveness in evaluating standard Chinese-speaking patients with hip osteoarthritis undergoing THA. It can be used by clinical surgeons as a complement to the traditional outcome measures.  相似文献   
97.
98.
99.

BACKGROUND

Important changes are occurring in how the medical profession approaches assessing and maintaining competence. Physician support for such changes will be essential for their success.

OBJECTIVE

To describe physician attitudes towards assessing and maintaining competence.

DESIGN

Cross-sectional internet survey.

PARTICIPANTS

Random sample of 1,000 American College of Physicians members who were eligible to participate in the American Board of Internal Medicine Maintenance of Certification program.

MAIN MEASURES

Questions assessed physicians’ attitudes and experiences regarding: 1) self-regulation, 2) feedback on knowledge and clinical care, 3) demonstrating knowledge and clinical competence, 4) frequency of use and effectiveness of methods to assess or improve clinical care, and 5) transparency.

KEY RESULTS

Surveys were completed by 446 of 943 eligible respondents (47 %). Eighty percent reported it was important (somewhat/very) to receive feedback on their knowledge, and 94 % considered it important (somewhat/very) to get feedback on their quality of care. However, only 24 % reported that they receive useful feedback on their knowledge most/all of the time, and 27 % reported receiving useful feedback on their clinical care most/all of the time. Seventy-five percent agreed that participating in programs to assess their knowledge is important to staying up-to-date, yet only 52 % reported participating in such programs within the last 3 years. The majority (58 %) believed physicians should be required to demonstrate their knowledge via a secure examination every 9–10 years. Support was low for Specialty Certification Boards making information about physician competence publically available, with respondents expressing concern about patients misinterpreting information about their Board Certification activities.

CONCLUSIONS

A gap exists between physicians’ interest in feedback on their competence and existing programs’ ability to provide such feedback. Educating physicians about the importance of regularly assessing their knowledge and quality of care, coupled with enhanced systems to provide such feedback, is needed to close this gap.  相似文献   
100.

Purpose

Long-term dialysis often causes physiological and metabolic problems that may affect the outcomes of surgery. The aim of this study was to elucidate whether emergency surgery for acute abdomen yields similar outcomes in dialysis patients versus non-dialysis patients.

Methods

The subjects were 126 patients who underwent emergency surgery for acute abdomen between January, 2007 and November, 2011 in our hospital. They were divided into a dialysis group (HD group; n = 9) and a non-dialysis group (non-HD group; n = 117) and their postoperative morbidity and mortality were compared.

Results

Postoperative morbidity and mortality were significantly worse in the HD group. All 9 of these patients succumbed to postoperative complications versus only 5 of the 117 patients in the non-HD group.

Conclusion

The outcomes of emergency surgery for acute abdomen were significantly worse for dialysis patients than for non-dialysis patients. Prompt diagnosis, initiation of the most suitable surgical procedure, and meticulous postoperative cares are imperative to improving the surgical outcomes of dialysis patients.  相似文献   
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