全文获取类型
| 收费全文 | 4651篇 |
| 免费 | 275篇 |
| 国内免费 | 30篇 |
专业分类
| 耳鼻咽喉 | 89篇 |
| 儿科学 | 174篇 |
| 妇产科学 | 78篇 |
| 基础医学 | 388篇 |
| 口腔科学 | 122篇 |
| 临床医学 | 663篇 |
| 内科学 | 764篇 |
| 皮肤病学 | 66篇 |
| 神经病学 | 562篇 |
| 特种医学 | 57篇 |
| 外科学 | 385篇 |
| 综合类 | 392篇 |
| 现状与发展 | 1篇 |
| 预防医学 | 743篇 |
| 眼科学 | 72篇 |
| 药学 | 227篇 |
| 3篇 | |
| 中国医学 | 94篇 |
| 肿瘤学 | 76篇 |
出版年
| 2024年 | 10篇 |
| 2023年 | 128篇 |
| 2022年 | 204篇 |
| 2021年 | 261篇 |
| 2020年 | 214篇 |
| 2019年 | 250篇 |
| 2018年 | 278篇 |
| 2017年 | 178篇 |
| 2016年 | 184篇 |
| 2015年 | 120篇 |
| 2014年 | 360篇 |
| 2013年 | 353篇 |
| 2012年 | 264篇 |
| 2011年 | 314篇 |
| 2010年 | 236篇 |
| 2009年 | 247篇 |
| 2008年 | 281篇 |
| 2007年 | 220篇 |
| 2006年 | 168篇 |
| 2005年 | 115篇 |
| 2004年 | 98篇 |
| 2003年 | 89篇 |
| 2002年 | 57篇 |
| 2001年 | 50篇 |
| 2000年 | 49篇 |
| 1999年 | 46篇 |
| 1998年 | 38篇 |
| 1997年 | 22篇 |
| 1996年 | 22篇 |
| 1995年 | 12篇 |
| 1994年 | 7篇 |
| 1993年 | 5篇 |
| 1992年 | 8篇 |
| 1991年 | 10篇 |
| 1990年 | 5篇 |
| 1989年 | 12篇 |
| 1988年 | 9篇 |
| 1987年 | 4篇 |
| 1986年 | 5篇 |
| 1985年 | 5篇 |
| 1984年 | 1篇 |
| 1983年 | 2篇 |
| 1982年 | 5篇 |
| 1981年 | 2篇 |
| 1980年 | 2篇 |
| 1979年 | 1篇 |
| 1978年 | 1篇 |
| 1973年 | 1篇 |
| 1972年 | 2篇 |
| 1970年 | 1篇 |
排序方式： 共有4956条查询结果，搜索用时 15 毫秒
101.
《Clinical gastroenterology and hepatology》2022,20(6):e1426-e1437
- Download : Download high-res image (225KB)
- Download : Download full-size image
102.
《Clinical gastroenterology and hepatology》2022,20(6):1315-1325.e4
- Download : Download high-res image (138KB)
- Download : Download full-size image
103.
104.
105.
Lenka HODACOVA Zdenka SUSTOVA Eva CERMAKOVA Martin KAPITAN Jindra SMEJKALOVA 《Industrial health》2015,53(1):48-55
The purpose of the study was to describe the occurrence of the most common
complaints related to MSDs in Czech dentists and to assess the risk factors affecting
them. A questionnaire survey of 581 Czech dentists (the response rate 72.6%) was conducted
in 2011. The questionnaire ascertained general information about the respondents, their
work habits and environment along with the occurrence of musculoskeletal disorders. The
respondents filled out the questionnaires during the educational events organized by the
Czech Dental Chamber. At least mild difficulties associated with the motoric system were
reported by 96.9% of the respondents, with 66.3% of respondents reporting moderate or
major difficulties. Back and neck pain followed by shoulder pain and headache were the
most common complaints in our sample. According to our data: age, gender, length of
practice, a history of serious MSDs, the occurrence of MSDs in blood relatives, the
perception of work as psychologically demanding, and especially a perceived moderate/bad
general health were significantly associated with the four most common musculoskeletal
complaints. Some of the factors were found as protective. This study suggests that MSDs
represent a significant burden for Czech dentists and further research is needed to
elucidate this issue. 相似文献
106.
107.
Lindsey M. Philpot Priya Ramar Muhamad Y. Elrashidi Tiffany A. Sinclair Jon O. Ebbert 《Mayo Clinic proceedings. Mayo Clinic》2018,93(10):1431-1439
Objective
To evaluate the impact of opioid controlled substance agreements (CSAs) enrollment on health care utilization.Patients and Methods
We retrospectively evaluated health care utilization changes among 772 patients receiving long-term opioid therapy for chronic noncancer pain enrolled in a CSA between July 1, 2015, and December 31, 2015. We ascertained patient characteristics and utilization 12 months before and after CSA enrollment. Decreased utilization was defined as a decrease of 1 or more hospitalizations or emergency department visits and 3 or more outpatient primary and specialty care visits. Multivariate modeling assessed demographic characteristics associated with utilization changes.Results
The 772 patients enrolled in an opioid CSA during the study period had a mean ± SD age of 63.5±14.9 years and were predominantly female, white, and married. The CSA enrollment was associated with decreased outpatient primary care visits (odds ratio [OR], 0.16; 95% CI, 0.14-0.19) and increased diagnostic radiology services (OR, 1.22; 95% CI, 1.02-1.47). After CSA enrollment, patients with greater comorbidity (Charlson Comorbidity Index score >3) were more likely to have reduced hospitalizations (adjusted OR, 2.8; 95% CI, 1.3-6.0; P=.008), reduced outpatient primary care visits (adjusted OR, 2.0; 95% CI, 1.2-3.2; P=.005), and reduced specialty care visits (adjusted OR, 2.0; 95% CI, 1.2-3.3; P=.006).Conclusion
For patients receiving long-term opioid therapy for chronic noncancer pain, CSA enrollment is associated with reductions in primary care visits and increased radiologic service utilization. Patients with greater comorbidity were more likely to have reductions in hospitalizations, outpatient primary care visits, and outpatient specialty clinic visits after CSA enrollment. The observational nature of the study does not allow the conclusion that CSA implementation is the primary reason for these observed changes. 相似文献108.
Molly E. Marino Emily C. Dore Pengsheng Ni Colleen M. Ryan Jeffrey C. Schneider Amy Acton Alan M. Jette Lewis E. Kazis 《Archives of physical medicine and rehabilitation》2018,99(3):521-528
Objective
To develop self-reported short forms for the Life Impact Burn Recovery Evaluation (LIBRE) Profile.Design
Short forms based on the item parameters of discrimination and average difficulty.Setting
A support network for burn survivors, peer support networks, social media, and mailings.Participants
Burn survivors (N=601) older than 18 years.Interventions
Not applicable.Main Outcome Measures
The LIBRE Profile.Results
Ten-item short forms were developed to cover the 6 LIBRE Profile scales: Relationships with Family & Friends, Social Interactions, Social Activities, Work & Employment, Romantic Relationships, and Sexual Relationships. Ceiling effects were ≤15% for all scales; floor effects were <1% for all scales. The marginal reliability of the short forms ranged from .85 to .89.Conclusions
The LIBRE Profile-Short Forms demonstrated credible psychometric properties. The short form version provides a viable alternative to administering the LIBRE Profile when resources do not allow computer or Internet access. The full item bank, computerized adaptive test, and short forms are all scored along the same metric, and therefore scores are comparable regardless of the mode of administration. 相似文献109.
Anthony H. Lequerica Christian Lucca Nancy D. Chiaravalloti Irene Ward John D. Corrigan 《Archives of physical medicine and rehabilitation》2018,99(9):1811-1817
Objective
To test the feasibility and validity of an online version of an established interview designed to determine a lifetime history of traumatic brain injury (TBI).Design
Cross-sectional.Setting
General community.Participants
A volunteer sample of individuals (N= 265) from the general population across the United States.Interventions
Not applicable.Main Outcome Measure(s)
Online version of the Ohio State University Traumatic Brain Injury Identification Method, Rivermead Postconcussion Symptoms Questionnaire (RPQ), Patient-Reported Outcomes Measurement Information System Cognitive Concerns Scale.Results
The measure was completed by 89.4% of the sample with most participants completing the measure in <8 minutes. After controlling for age, sex, psychiatric history, drug or alcohol history, and history of developmental disability, worst TBI severity was significantly associated with scores on the RPQ, F(2,230)=4.56, P=.011, and having a TBI within the past 2 years was associated with higher scores on the cognitive factor subscale of the RPQ, F(1,75)=7.7, P=.007.Conclusions
The online administration of the Ohio State University Traumatic Brain Injury Identification Method appears to be feasible in the general population. Preliminary validity was demonstrated for the indices of worst TBI severity and time since most recent TBI. 相似文献110.
Xuemei Chen Yanan He Xianmei Meng Chenchen Gao Zhihui Liu Lanshu Zhou 《Archives of physical medicine and rehabilitation》2018,99(4):667-675