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   5135916篇
  免费   385707篇
  国内免费   16236篇
耳鼻咽喉   71345篇
儿科学   164891篇
妇产科学   136581篇
基础医学   765510篇
口腔科学   143017篇
临床医学   472822篇
内科学   936410篇
皮肤病学   123078篇
神经病学   425015篇
特种医学   198115篇
外国民族医学   954篇
外科学   768321篇
综合类   144008篇
现状与发展   24篇
一般理论   2885篇
预防医学   422560篇
眼科学   122896篇
药学   365389篇
  28篇
中国医学   14103篇
肿瘤学   259907篇
  2021年   57330篇
  2019年   59671篇
  2018年   77205篇
  2017年   59276篇
  2016年   65708篇
  2015年   77938篇
  2014年   112325篇
  2013年   178394篇
  2012年   147846篇
  2011年   157063篇
  2010年   133710篇
  2009年   132591篇
  2008年   142041篇
  2007年   152884篇
  2006年   159675篇
  2005年   153477篇
  2004年   153944篇
  2003年   143219篇
  2002年   132077篇
  2001年   209875篇
  2000年   206604篇
  1999年   184476篇
  1998年   77247篇
  1997年   71294篇
  1996年   69218篇
  1995年   64703篇
  1994年   58566篇
  1993年   54196篇
  1992年   134793篇
  1991年   129204篇
  1990年   124502篇
  1989年   121121篇
  1988年   111333篇
  1987年   108986篇
  1986年   102677篇
  1985年   99867篇
  1984年   80516篇
  1983年   70751篇
  1982年   52361篇
  1981年   48307篇
  1980年   45156篇
  1979年   69677篇
  1978年   54094篇
  1977年   47821篇
  1976年   44323篇
  1975年   45179篇
  1974年   50422篇
  1973年   48340篇
  1972年   45235篇
  1971年   41965篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
ABSTRACT

A monocausal bacteriological understanding of infectious disease orients tuberculosis control efforts towards antimicrobial interventions. A bias towards technological solutions can leave multistranded public health and social interventions largely neglected. In the context of globalising biomedical approaches to infectious disease control, this ethnography-inspired review article reflects upon the implementation of rapid diagnostic technology in low- and middle-income countries. Fieldwork observations in Vietnam provided a stimulus for a critical review of the global rollout of tuberculosis diagnostic technology. To address local needs in tuberculosis control, health managers in resource-poor settings are readily cooperating with international donors to deploy novel diagnostic technologies throughout national tuberculosis programme facilities. Increasing investment in new diagnostic technologies is predicated on the supposition that these interventions will ameliorate disease outcomes. However, suboptimal treatment control persists even when accurate diagnostic technologies are available, suggesting that promotion of singular technological solutions can distract from addressing systemic change, without which disease susceptibility, propagation of infection, detection gaps, diagnostic delays, and treatment shortfalls persist.  相似文献   
62.
63.
64.
65.
66.
67.
68.
69.
70.

Background

Nursing Home Compare (NHC) ratings, created and maintained by Medicare, are used by both hospitals and consumers to aid in the skilled nursing facility (SNF) selection process. To date, no studies have linked NHC ratings to actual episode-based outcomes. The purpose of this study was to evaluate whether NHC ratings are valid predictors of 90-day complications, readmission, and bundle costs for patients discharged to an SNF after primary total joint arthroplasty (TJA).

Methods

All SNF-discharged primary TJA cases in 2017 at a multihospital academic health system were queried. Demographic, psychosocial, and clinical variables were manually extracted from the health record. Medicare NHC ratings were then collected for each SNF. For patients in the Medicare bundle, postacute and total bundle cost was extracted from claims.

Results

Four hundred eighty-eight patients were discharged to a total of 105 unique SNFs. In multivariate analysis, overall NHC rating was not predictive of 90-day readmission/major complications, >75th percentile postacute cost, or 90-day bundle cost exceeding the target price. SNF health inspection and quality measure ratings were also not predictive of 90-day readmission/major complications or bundle performance. A higher SNF staffing rating was independently associated with a decreased odds for >75th percentile 90-day postacute spend (odds ratio, 0.58; P = .01) and a 90-day bundle cost exceeding the target price (odds ratio = 0.69; P = .02) but was similarly not predictive of 90-day readmission/complications.

Conclusion

Results of our study suggest that Medicare's NHC tool is not a useful predictor of 90-day costs, complications, or readmissions for SNFs within our health system.  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