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   4946911篇
  免费   383252篇
  国内免费   15688篇
耳鼻咽喉   69270篇
儿科学   158297篇
妇产科学   130120篇
基础医学   741713篇
口腔科学   137382篇
临床医学   454701篇
内科学   903341篇
皮肤病学   117231篇
神经病学   413988篇
特种医学   193688篇
外国民族医学   968篇
外科学   741234篇
综合类   139012篇
现状与发展   24篇
一般理论   2809篇
预防医学   413243篇
眼科学   116044篇
药学   352398篇
  26篇
中国医学   12992篇
肿瘤学   247370篇
  2021年   57073篇
  2019年   59449篇
  2018年   76316篇
  2017年   58522篇
  2016年   64935篇
  2015年   77419篇
  2014年   111899篇
  2013年   177622篇
  2012年   140646篇
  2011年   148584篇
  2010年   131228篇
  2009年   131157篇
  2008年   133874篇
  2007年   143709篇
  2006年   151287篇
  2005年   145462篇
  2004年   146242篇
  2003年   136063篇
  2002年   124695篇
  2001年   197274篇
  2000年   194241篇
  1999年   174345篇
  1998年   75919篇
  1997年   70627篇
  1996年   68811篇
  1995年   64374篇
  1994年   58201篇
  1993年   54020篇
  1992年   128582篇
  1991年   123387篇
  1990年   118832篇
  1989年   115383篇
  1988年   106270篇
  1987年   104323篇
  1986年   98414篇
  1985年   95834篇
  1984年   77800篇
  1983年   68461篇
  1982年   51636篇
  1981年   47720篇
  1980年   44737篇
  1979年   67690篇
  1978年   53045篇
  1977年   46608篇
  1976年   43241篇
  1975年   44067篇
  1974年   48995篇
  1973年   46930篇
  1972年   43928篇
  1971年   40618篇
排序方式: 共有10000条查询结果,搜索用时 9 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