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   1420篇
  免费   145篇
  国内免费   3篇
耳鼻咽喉   19篇
儿科学   31篇
妇产科学   38篇
基础医学   46篇
口腔科学   23篇
临床医学   344篇
内科学   166篇
皮肤病学   24篇
神经病学   50篇
特种医学   27篇
外科学   304篇
综合类   49篇
预防医学   265篇
眼科学   10篇
药学   85篇
  1篇
中国医学   3篇
肿瘤学   83篇
  2024年   2篇
  2023年   32篇
  2022年   24篇
  2021年   36篇
  2020年   55篇
  2019年   44篇
  2018年   44篇
  2017年   44篇
  2016年   47篇
  2015年   43篇
  2014年   82篇
  2013年   80篇
  2012年   57篇
  2011年   57篇
  2010年   35篇
  2009年   63篇
  2008年   69篇
  2007年   53篇
  2006年   63篇
  2005年   51篇
  2004年   60篇
  2003年   53篇
  2002年   52篇
  2001年   56篇
  2000年   45篇
  1999年   68篇
  1998年   31篇
  1997年   38篇
  1996年   41篇
  1995年   31篇
  1994年   22篇
  1993年   17篇
  1992年   19篇
  1991年   13篇
  1990年   10篇
  1989年   8篇
  1988年   2篇
  1987年   5篇
  1986年   3篇
  1985年   1篇
  1984年   3篇
  1983年   2篇
  1982年   3篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
排序方式: 共有1568条查询结果,搜索用时 31 毫秒
11.
OBJECTIVE: To assess the quality of care provided to diabetic patients by family physicians in a university health clinic, using measures of glycemic and cardiovascular risk control as well as documentation of and adherence to World Health Organization (WHO) guidelines for diabetes primary care. DESIGN: Chart review of the previous year's medical notes for all identified diabetics in the practice over 2.5 years. RESULTS: Two-hundred and four diabetic patients were identified, with an estimated prevalence of 4.1%. The majority was type II diabetics, on oral hypoglycemic agents. Glycosylated hemoglobin was documented in 39.7% of patients, fasting plasma glucose in 99%, cholesterol in 93.1%, triglycerides in 91.2% and blood pressure in 85.8%; optimal control of these indicators was noted in 28.4%, 17.8%, 34%, 29.6% and 55.4% respectively. Fifty percent of the diabetics were referred for retinal checks. Physicians documented the presence of nephropathy in 46.8% and neuropathy in 59.6%; however, they documented patient instruction on foot care, diet, exercise and diabetes self-care poorly. CONCLUSION: There is a need for interventions to improve management and documentation in diabetes care in order to achieve early detection and prevention of complications. Developing a protocol for the clinic based on standard guidelines, and the use of flow sheets may be helpful in improving these intermediate indicators of quality of care.  相似文献   
12.
13.
郑红  郑刚  范荣 《职业与健康》2006,22(16):1314-1315
目的对广东省职业病防治院抗菌药物临床应用的不合理现象进行分析,促进临床合理用药。方法随机抽取该院2003年度门诊、急诊处方,根据临床药理学知识及文献资料对抗菌药物不合理应用情况进行分析。结果共抽查处方9 600张,其中使用抗菌药物处方2 023张,占21.07%;不合理处方197张,占9.74%。主要表现在联用不合理、配伍不当、给药方法不当、剂量不合理和选药不合理等方面。结论严格控制抗菌药物的临床应用,处方审核将有助于促进抗菌药物的合理使用。  相似文献   
14.
15.
Audit of early postoperative outcomes adjusted for patient case mix is still in its infancy in head and neck surgery. Nevertheless the role for audit of early postoperative outcomes is obvious. The primary outcome measure of this study was to identify factors that are associated with early mortality or morbidity after surgery for head and neck squamous cell carcinoma (HNSCC). The secondary outcome measure was to develop a pilot score that allows for risk-adjustment of outcome data to facilitate departmental audit. In this series the mortality rate was low (2.8%), in keeping with other published series. Complications, including those causing death, occurred after 38.1% of operations. Independent risk factors for mortality on logistic regression were shown to be previous HNSCC (P = 0.03), estimated blood loss (l) (P = 0.03), and extracapsular spread (P = 0.05). Age (P = 0.01), tracheostomy (P < 0.01), estimated blood loss (l) (P = 0.05), and duration of anaesthesia (P < 0.01) were independent predictors of complications. Models predicting for risk demonstrated good discrimination (area under the curve statistics) for mortality (0.86) and morbidity (0.81). These pilot scores need external validation and may herald a means of facilitating risk-adjustment in the audit of early outcomes, allowing meaningful comparison of surgeons and their units over time.  相似文献   
16.
17.

Objective

To evaluate whether Medicare's Hospital Readmissions Reduction Program (HRRP) is associated with increased observation stay use.

Data Sources and Study Setting

A nationally representative sample of fee-for-service Medicare claims, January 2009–September 2016.

Study Design

Using a difference-in-difference (DID) design, we modeled changes in observation stays as a proportion of total hospitalizations, separately comparing the initial (acute myocardial infarction, pneumonia, heart failure) and subsequent (chronic obstructive pulmonary disease) target conditions with a control group of nontarget conditions. Each model used 3 time periods: baseline (15 months before program announcement), an intervening period between announcement and implementation, and a 2-year post-implementation period, with specific dates defined by HRRP policies.

Data Collection/Extraction Methods

We derived a 20% random sample of all hospitalizations for beneficiaries continuously enrolled for 12 months before hospitalization (N = 7,162,189).

Principal Findings

Observation stays increased similarly for the initial HRRP target and nontarget conditions in the intervening period (0.01% points per month [95% CI −0.01, 0.3]). Post-implementation, observation stays increased significantly more for target versus nontarget conditions, but the difference is quite small (0.02% points per month [95% CI 0.002, 0.04]). Results for the COPD analysis were statistically insignificant in both policy periods.

Conclusions

The increase in observation stays is likely due to other factors, including audit activity and clinical advances.  相似文献   
18.
19.
20.
Aims: Benefits to patients from systemic anti‐cancer therapies (SACT) occur at a cost of significant toxicities that can be life threatening. Published data of SACT mortality outside clinical trials is limited with no published Australia data. We aim to establish local outcomes at a regional Victorian oncology center to allow comparison with limited international data. Methods: An audit was undertaken at Ballarat Health Services to analyze all deaths occurring within 30 and 60 days of receiving SACT (cytotoxic chemotherapy and targeted therapy) for epithelial malignancies and hematological malignancies (excluding acute leukemia), over a 12‐month period. Hormonal therapy was excluded. Results: Between 1 January and 31 December 2008, 378 patients received SACT. In total 13 deaths (3.4%) occurred within 30 days following SACT. Three deaths (23%) were definitely treatment‐related – neutropenic sepsis, pneumocystis pneumonia and bowel perforation, respectively. Eight deaths (62%) were definitely unrelated to treatment. Most deaths were due to disease progression (six patients) For two patients (15%), the cause of death was unknown. Most patients were treated with palliative intent. Most patients were receiving first‐line treatment (seven patients, 50%). A further five deaths (1.3%) occurred 31–60 days after SACT, four of which were due to disease progression. Conclusion: Our local outcome data are comparable to limited current international data. This type of audit reviews local outcomes and identifies factors contributing to mortality in order to improve standards of care. We encourage similar audits to establish national benchmarks of 30‐day mortality rate.  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