全文获取类型
收费全文 | 9029篇 |
免费 | 550篇 |
国内免费 | 23篇 |
专业分类
耳鼻咽喉 | 36篇 |
儿科学 | 419篇 |
妇产科学 | 339篇 |
基础医学 | 978篇 |
口腔科学 | 87篇 |
临床医学 | 2006篇 |
内科学 | 1393篇 |
皮肤病学 | 123篇 |
神经病学 | 620篇 |
特种医学 | 319篇 |
外科学 | 774篇 |
综合类 | 86篇 |
一般理论 | 28篇 |
预防医学 | 1321篇 |
眼科学 | 155篇 |
药学 | 464篇 |
中国医学 | 9篇 |
肿瘤学 | 445篇 |
出版年
2024年 | 3篇 |
2023年 | 49篇 |
2022年 | 74篇 |
2021年 | 150篇 |
2020年 | 138篇 |
2019年 | 212篇 |
2018年 | 231篇 |
2017年 | 178篇 |
2016年 | 205篇 |
2015年 | 203篇 |
2014年 | 289篇 |
2013年 | 513篇 |
2012年 | 644篇 |
2011年 | 784篇 |
2010年 | 333篇 |
2009年 | 339篇 |
2008年 | 708篇 |
2007年 | 610篇 |
2006年 | 602篇 |
2005年 | 631篇 |
2004年 | 640篇 |
2003年 | 591篇 |
2002年 | 546篇 |
2001年 | 58篇 |
2000年 | 41篇 |
1999年 | 65篇 |
1998年 | 102篇 |
1997年 | 93篇 |
1996年 | 72篇 |
1995年 | 62篇 |
1994年 | 50篇 |
1993年 | 47篇 |
1992年 | 37篇 |
1991年 | 23篇 |
1990年 | 37篇 |
1989年 | 24篇 |
1988年 | 28篇 |
1987年 | 17篇 |
1986年 | 17篇 |
1985年 | 19篇 |
1984年 | 22篇 |
1983年 | 20篇 |
1982年 | 31篇 |
1981年 | 23篇 |
1980年 | 13篇 |
1979年 | 5篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1976年 | 3篇 |
1975年 | 3篇 |
排序方式: 共有9602条查询结果,搜索用时 15 毫秒
991.
Sarina R. Isenberg Rebecca A. Aslakson James N. Dionne-Odom Katherine Clegg Smith Sarabdeep Singh Susan Larson John F.P. Bridges Thomas J. Smith Jennifer L. Wolff Debra L. Roter 《Patient education and counseling》2018,101(6):1066-1074
Objective
To examine the association between family companion presence during pre-surgical visits to discuss major cancer surgery and patient-provider communication and satisfaction.Methods
Secondary analysis of 61 pre-surgical visit recordings with eight surgical oncologists at an academic tertiary care hospital using the Roter Interaction Analysis System (RIAS). Surgeons, patients, and companions completed post-visit satisfaction questionnaires. Poisson and logistic regression models assessed differences in communication and satisfaction when companions were present vs. absent.Results
There were 46 visits (75%) in which companions were present, and 15 (25%) in which companions were absent. Companion communication was largely emotional and facilitative, as measured by RIAS. Companion presence was associated with more surgeon talk (IRR 1.29, p?=?0.006), and medical information-giving (IRR 1.41, p?=?0.001). Companion presence was associated with less disclosure of lifestyle/psychosocial topics by patients (IRR 0.55, p?=?0.037). In adjusted analyses, companions’ presence was associated with lower levels of patient-centeredness (IRR 0.77, p 0.004). There were no differences in patient or surgeon satisfaction based on companion presence.Conclusion
Companions’ presence during pre-surgical visits was associated with patient-surgeon communication but was not associated with patient or surgeon satisfaction.Practice implications
Future work is needed to develop interventions to enhance patient-companion-provider interactions in this setting. 相似文献992.
Riegel B McKinley S Moser DK Meischke H Doering L Dracup K 《Research in nursing & health》2007,30(6):584-594
Knowledge, attitudes, and beliefs of persons with ischemic heart disease are important predictors of delay in seeking treatment. We tested the psychometric profile of the Acute Coronary Syndrome (ACS) Response Index, a measure assessing patient knowledge, attitudes and beliefs about ACS symptoms and response, in 3,522 patients. On factor analysis, 21 dichotomous knowledge items loaded onto four factors (alpha .82). In a separate factor analysis, another five items loaded on two attitude factors, and seven items loaded on two belief factors (alpha .76). The scales discriminated between patients previously exposed to medical experts. Scale scores were significantly correlated but without evidence of multicolinearity. Initial tests of reliability and validity support further testing of this new instrument. 相似文献
993.
June C. Carroll Yves Talbot Joanne Permaul Anastasia Tobin Rahim Moineddin Sean Blaine Jeff Bloom Debra Butt Kelly Kay Deanna Telner 《Canadian family physician Médecin de famille canadien》2016,62(1):e23-e30
Objective
To explore patients’ perceptions of primary care (PC) in the early development of academic family health teams (aFHTs)—interprofessional PC teams delivering care where family medicine and other health professional learners are trained—focusing on the 4 core domains of PC.Design
Self-administered survey using the Primary Care Assessment Tool Adult Expanded Version (PCAT), which addresses 4 core domains of PC (first contact, continuity, comprehensiveness, and coordination). The PCAT uses a 4-point Likert scale (from definitely not to definitely) to capture patients’ responses about the occurrence of components of care.Setting
Six aFHTs in Ontario.Participants
Adult patients attending appointments and administrators at each of the aFHTs.Main outcome measures
Mean PCAT domain scores, with a score of 3 chosen as the minimum expected level of care. Multivariate log binomial regression models were used to estimate the adjusted relative risks of PCAT score levels as functions of patient- and clinic-level characteristics.Results
The response rate was 47.3% (1026 of 2167). The mean age of respondents was 49.6 years, and most respondents were female (71.6%). The overall PC score (2.92) was just below the minimum expected care level. Scores for first contact (2.28 [accessibility]), coordination of information systems (2.67), and comprehensiveness of care (2.83 [service available] and 2.36 [service provided]) were below the minimum. Findings suggest some patient groups might not be optimally served by aFHTs, particularly recent immigrants. Characteristics of aFHTs, including a large number of physicians, were not associated with high performance on PC domains. Distributed practices across multiple sites were negatively associated with high performance for some domains. The presence of electronic medical records was not associated with improved performance on coordination of information systems.Conclusion
Patients of these aFHTs rated several core domains of PC highly, but results indicate room for improvement in several domains, particularly first-contact accessibility. A future study will determine what changes were implemented in these aFHTs and if patient ratings have improved. This reflective process is essential to ensuring that aFHTs provide effective models of PC to learners of all disciplines. 相似文献994.
Brown DJ DeCorse-Johnson AL Irving-Ray M Wu WW 《Policy, politics & nursing practice》2005,6(4):331-334
This policy paper addresses the problem of underrepresentation of minorities in the health care professions. Projections are that by 2050 minorities will represent 49% of the U.S. population. Several notable reports suggest that the health care of underrepresented minorities is improved when providers of similar ethnic and racial backgrounds provide the care. However, minority representation in the health care professions has not kept pace with the increase of minorities in the population. A variety of groups (federal, state, private, and health professional educational institutions) have provided billions of dollars toward increasing the number of underrepresented minority health care providers. However, the effectiveness of these programs is not readily evident. Therefore, we recommend comprehensive evaluations of programs funded to increase diversity in the health professions and the development of a Minority Health Care Professionals Center to assume accountability for monitoring programs that receive funding to increase the number of underrepresented minority health care providers. 相似文献
995.
996.
Timing for the Introduction of Cycled Light for Extremely Preterm Infants: A Randomized Controlled Trial 下载免费PDF全文
Debra H. Brandon Susan G. Silva Jinhee Park William Malcolm Heba Kamhawy Diane Holditch‐Davis 《Research in nursing & health》2017,40(4):294-310
Day‐night cycled light improves health outcomes in preterm infants, yet the best time to institute cycled light is unclear. The hypothesis of this study was that extremely preterm infants receiving early cycled light would have better health and developmental outcomes than infants receiving late cycled light. Infants born at ≤28 weeks gestation were randomly assigned to early cycled light (ECL) starting at 28 weeks postmenstrual age [PMA] or late cycled light (LCL), starting at 36 weeks PMA. Daylight was 200–600 lux and night was 5–30 lux. Primary outcomes were weight over time and length of hospitalization. Secondary outcomes were hospital costs, sleep development, and neurodevelopment at 9, 18, and 24 months corrected age. Of 121 infants randomized, 118 were included in analysis. Weight gain in the two groups did not differ significantly but increased across time in both groups. In PMA weeks 36–44, the mean weight gain was 193.8 grams in the ECL group compared to 176.3 grams in the LCL group. Effect sizes for weight were Cohen d = 0.26 and 0.36 for 36 and 44 weeks PMA. Infants in the ECL group went home an average of 5.5 days earlier than the LCL group, but this difference was not statistically significant. There were no group differences on neurodevelopmental outcomes. Although statistically non‐significant, clinically important differences of improved weight gain and decreased hospital stay were observed with ECL. The small observed effect sizes on weight during hospitalization should be considered in future cycled light research with extremely preterm infants. © 2017 Wiley Periodicals, Inc. 相似文献
997.
998.
Michael L. Kent Patrick J. Tighe Inna Belfer Timothy J. Brennan Stephen Bruehl Chad M. Brummett Chester C. Buckenmaier Asokumar Buvanendran Robert I. Cohen Paul Desjardins David Edwards Roger Fillingim Jennifer Gewandter Debra B. Gordon Robert W. Hurley Henrik Kehlet John D. Loeser Sean Mackey Gregory Terman 《The journal of pain》2017,18(5):479-489
999.
1000.
Riggs JE Davis SM Hobbs GR Paulson DJ Chinnis AS Heilman PL 《The American journal of emergency medicine》2003,21(1):30-31
The objective of this study was to examine the influence of frequent emergency department (ED) use on early returns to the ED at a large rural academic medical center. An analysis was done of all 35,440 visits by 22,442 individuals to a large rural academic medical center ED during calendar year 2000. Of 35,440 ED visits, there were 1,992 (5.62%) return visits within 72 hours (early return). Frequent ED visits (visits made by individuals making 4 or more visits per year) was a predictor of early return visits (odds ratio [OR] 3.21, 95% confidence interval [CI] 2.93-3.52; Wald chi(2), P <.0001). Of 22,442 individuals who came to the ED during the study period, 1,601 (7.13%) returned within 72 hours. Frequency of ED use by a particular individual (4 or more visits per year) was also a predictor of early return for that individual (OR 14.55, 95% CI 12.84-16.48; Wald chi(2), P <.000001). The high rate of early returns to this rural academic ED was significantly associated with frequent visits (4 or more times per year) to the ED by particular individual. 相似文献