全文获取类型
收费全文 | 4294287篇 |
免费 | 349844篇 |
国内免费 | 14504篇 |
学科分类
医药卫生 | 4658635篇 |
出版年
2021年 | 50595篇 |
2020年 | 35851篇 |
2019年 | 58844篇 |
2018年 | 74407篇 |
2017年 | 56682篇 |
2016年 | 62829篇 |
2015年 | 75735篇 |
2014年 | 110035篇 |
2013年 | 175589篇 |
2012年 | 124360篇 |
2011年 | 129134篇 |
2010年 | 125937篇 |
2009年 | 127675篇 |
2008年 | 115287篇 |
2007年 | 122578篇 |
2006年 | 131378篇 |
2005年 | 125498篇 |
2004年 | 126832篇 |
2003年 | 116805篇 |
2002年 | 105675篇 |
2001年 | 166330篇 |
2000年 | 160997篇 |
1999年 | 146327篇 |
1998年 | 65877篇 |
1997年 | 61794篇 |
1996年 | 59748篇 |
1995年 | 60487篇 |
1994年 | 54537篇 |
1993年 | 50553篇 |
1992年 | 106260篇 |
1991年 | 101333篇 |
1990年 | 97121篇 |
1989年 | 94663篇 |
1988年 | 86916篇 |
1987年 | 85164篇 |
1986年 | 80064篇 |
1985年 | 78226篇 |
1984年 | 65118篇 |
1983年 | 57796篇 |
1982年 | 46740篇 |
1981年 | 43422篇 |
1980年 | 40619篇 |
1979年 | 54762篇 |
1978年 | 44431篇 |
1977年 | 39558篇 |
1976年 | 36465篇 |
1975年 | 36490篇 |
1974年 | 39380篇 |
1973年 | 37567篇 |
1972年 | 35271篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Derek K. Chu Romina Brignardello-Petersen Gordon H. Guyatt Cristian Ricci Jon Genuneit 《Pediatric allergy and immunology》2022,33(1):e13609
Network meta-analyses (NMAs) simultaneously estimate the effects of multiple possible treatment options for a given clinical presentation. For allergists to benefit optimally from NMAs, they must understand the process and be able to interpret the results. Through a worked example published in Pediatric Allergy and Immunology, we summarize how to identify credible NMAs and interpret them with a focus on recent innovations in the GRADE approach (Grading of Recommendations Assessment, Development, and Evaluation). NMAs build on traditional systematic reviews and meta-analyses that consider only direct paired comparisons by including indirect evidence, thus allowing the simultaneous assessment of the relative effect of all pairs of competing alternatives. Our framework informs clinicians of how to identify credible NMAs and address the certainty of the evidence. Trustworthy NMAs fill a critical gap in providing key inferences using direct and indirect evidence to inform clinical decision making when faced with more than two competing courses of treatment options. This document will help allergists to identify trustworthy NMAs to enhance patient care. 相似文献
82.
83.
84.
85.
Dongbing Lai Emma C. Johnson Sarah Colbert Gayathri Pandey Grace Chan Lance Bauer Meredith W. Francis Victor Hesselbrock Chella Kamarajan John Kramer Weipeng Kuang Sally Kuo Samuel Kuperman Yunlong Liu Vivia McCutcheon Zhiping Pang Martin H. Plawecki Marc Schuckit Jay Tischfield Leah Wetherill Yong Zang Howard J. Edenberg Bernice Porjesz Arpana Agrawal Tatiana Foroud 《Alcoholism, clinical and experimental research》2022,46(3):374-383
86.
87.
88.
Brede H. Eschliman MPH Hongmai H. Pham MD PhD Amol S. Navathe MD PhD Karen M. Dale BSN MSN Julian Harris MD MBA 《Health services research》2023,58(Z3):311-317
Objective
The aim was to identify healthcare payment and financing reforms to promote health equity and ways that the Agency for Healthcare Research and Quality (AHRQ) may promote those reforms.Data Sources and Study Setting
AHRQ convened a payment and financing workgroup–the authors of this paper–as part of its Health Equity Summit held in July 2022. This workgroup drew from its collective experience with healthcare payment and financing reform, as well as feedback from participants in a session at the Health Equity Summit, to identify the evidence base and promising paths for reforms to promote health equity.Study Design
The payment and financing workgroup developed an outline of reforms to promote health equity, presented the outline to participants in the payment and financing session of the July 2022 AHRQ Health Equity Summit, and integrated feedback from the participants.Data Collection/Extraction Methods
This paper did not require novel data collection; the authors collected the data from the existing evidence base.Principal Findings
The paper outlines root causes of health inequity and corresponding potential reforms in five domains: (1) the differential distribution of resources between healthcare providers serving different communities, (2) scarcity of financing for populations most in need, (3) lack of integration/accountability, (4) patient cost barriers to care, and (5) bias in provider behavior and diagnostic tools.Conclusions
Additional research is necessary to determine whether the proposed reforms are effective in promoting health equity. 相似文献89.
90.
Paul G. Richardson Fredrik Schjesvold Katja Weisel Philippe Moreau Larry D. Anderson Darrell White Paula Rodriguez-Otero Pieter Sonneveld Monika Engelhardt Matthew Jenner Alessandro Corso Jan Dürig Michel Pavic Morten Salomo Meral Beksac Albert Oriol Jindriska Lindsay Anna Marina Liberati Monica Galli Pawel Robak Alessandra Larocca Munci Yagci Filiz Vural Abraham S. Kanate Ruiyun Jiang Lara Grote Teresa Peluso Meletios Dimopoulos 《European journal of haematology》2022,108(1):73-83