收费全文 | 122725篇 |
免费 | 7723篇 |
国内免费 | 4124篇 |
耳鼻咽喉 | 472篇 |
儿科学 | 2325篇 |
妇产科学 | 973篇 |
基础医学 | 11034篇 |
口腔科学 | 1534篇 |
临床医学 | 16516篇 |
内科学 | 26242篇 |
皮肤病学 | 566篇 |
神经病学 | 13565篇 |
特种医学 | 5340篇 |
外国民族医学 | 8篇 |
外科学 | 8256篇 |
综合类 | 21801篇 |
现状与发展 | 14篇 |
一般理论 | 2篇 |
预防医学 | 5154篇 |
眼科学 | 979篇 |
药学 | 10845篇 |
101篇 | |
中国医学 | 4083篇 |
肿瘤学 | 4762篇 |
2024年 | 176篇 |
2023年 | 1266篇 |
2022年 | 2567篇 |
2021年 | 3681篇 |
2020年 | 3602篇 |
2019年 | 3065篇 |
2018年 | 3254篇 |
2017年 | 3567篇 |
2016年 | 4005篇 |
2015年 | 4208篇 |
2014年 | 8906篇 |
2013年 | 9337篇 |
2012年 | 7861篇 |
2011年 | 8770篇 |
2010年 | 7476篇 |
2009年 | 6810篇 |
2008年 | 6847篇 |
2007年 | 6866篇 |
2006年 | 6419篇 |
2005年 | 5496篇 |
2004年 | 4261篇 |
2003年 | 3648篇 |
2002年 | 2965篇 |
2001年 | 2720篇 |
2000年 | 2284篇 |
1999年 | 1875篇 |
1998年 | 1487篇 |
1997年 | 1374篇 |
1996年 | 1092篇 |
1995年 | 997篇 |
1994年 | 911篇 |
1993年 | 718篇 |
1992年 | 651篇 |
1991年 | 552篇 |
1990年 | 517篇 |
1989年 | 403篇 |
1988年 | 402篇 |
1987年 | 405篇 |
1986年 | 329篇 |
1985年 | 398篇 |
1984年 | 345篇 |
1983年 | 218篇 |
1982年 | 282篇 |
1981年 | 229篇 |
1980年 | 225篇 |
1979年 | 199篇 |
1978年 | 162篇 |
1977年 | 160篇 |
1976年 | 139篇 |
1973年 | 104篇 |
Design: Forty-two patients participating in the Task Shifting Strategy for Hypertension program (23 males, 19 females, and mean age 61. 7 years) completed in-depth, qualitative interviews. Interviews were transcribed, and key words and phrases were extracted and coded using the PEN-3 Cultural Model as a guide through open and axial coding techniques, thus allowing rich exploration of the data.
Results: Emergent themes included patients’ perceptions of hypertension, which encompassed misperceptions of hypertension and blood pressure control. Additional themes included enablers and barriers to hypertension management, and how the intervention nurtured lifestyle change associated with blood pressure control. Primary enabling factors included the supportive nature of TASSH nurses, while notable barriers were financial constraints and difficulty accessing medication. Nurturing factors included the motivational interviewing and patient counseling which instilled confidence in the patients that they could make lasting behavior changes.
Conclusions: This study offers a unique perspective of blood pressure control by examining how patients view an on-going task-shifting initiative for hypertension management. The results of this study shed light on factors that can help and hinder individuals in low-resource settings with long-term blood pressure management. 相似文献
Methods: This is a retrospective analysis of discharge records from the National Inpatient Sample database for patients receiving allo-HSCT between 1 January 2009 and 31 December 2013. Allo-HSCT discharges with an aGVHD diagnosis were included in the aGVHD group and those without any graft-versus-host disease (GVHD) diagnosis comprised the non-GVHD group. Mortality, LOS and costs were compared between the two groups, as well as within subgroups, including age (<18 vs. ≥18 years) and survival status (alive vs. deceased) at discharge.
Results: Overall, mortality (16.2% vs. 5.3%; p?<?.01), median hospital LOS (42.0 vs. 26.0 days; p?<?.01) and median total costs ($173,144 vs. $98,982; p?<?.01) were significantly increased in patients with aGVHD versus those without GVHD during hospitalizations for allo-HSCT, irrespective of age group. Patients with aGVHD who were <18 years of age had a lower mortality rate but greater hospital LOS and total costs versus patients aged ≥18 years. Patients who died during allo-HSCT hospitalization had longer LOS and incurred greater costs than those who survived in both the aGVHD and non-GVHD groups.
Conclusion: Occurrence of aGVHD during allo-HSCT admissions resulted in a tripling of the mortality rate and a near doubling of hospital LOS and total costs. In addition, death during allo-HSCT hospitalizations was associated with greater healthcare utilization and costs. Effectively mitigating aGVHD may improve survival and substantially reduce hospital LOS and costs for allo-HSCT. 相似文献