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   2732篇
  免费   143篇
  国内免费   24篇
耳鼻咽喉   23篇
儿科学   82篇
妇产科学   24篇
基础医学   76篇
口腔科学   8篇
临床医学   817篇
内科学   248篇
皮肤病学   18篇
神经病学   353篇
特种医学   34篇
外科学   351篇
综合类   89篇
预防医学   693篇
眼科学   10篇
药学   39篇
  1篇
中国医学   14篇
肿瘤学   19篇
  2024年   1篇
  2023年   78篇
  2022年   101篇
  2021年   189篇
  2020年   158篇
  2019年   216篇
  2018年   192篇
  2017年   117篇
  2016年   99篇
  2015年   91篇
  2014年   240篇
  2013年   371篇
  2012年   95篇
  2011年   152篇
  2010年   96篇
  2009年   83篇
  2008年   115篇
  2007年   109篇
  2006年   88篇
  2005年   57篇
  2004年   56篇
  2003年   34篇
  2002年   21篇
  2001年   13篇
  2000年   16篇
  1999年   20篇
  1998年   17篇
  1997年   8篇
  1996年   10篇
  1995年   6篇
  1994年   10篇
  1993年   5篇
  1992年   2篇
  1991年   5篇
  1990年   2篇
  1989年   4篇
  1988年   3篇
  1987年   5篇
  1986年   2篇
  1985年   1篇
  1984年   4篇
  1983年   3篇
  1981年   1篇
  1979年   1篇
  1972年   2篇
排序方式: 共有2899条查询结果,搜索用时 234 毫秒
1.
ObjectiveTo verify if the relationship between pain catastrophizing and pain worsening would be mediated by muscle weakness and disability in patients with symptomatic knee osteoarthritis.MethodsThis was a cross-sectional study in a hospital out-patient setting. Convenience sampling was used with a total of 50 participants with symptomatic knee osteoarthritis. Pain and the activities of daily livings (ADL) were assessed using the Knee Injury and Osteoarthritis Outcome Score (KOOS) subscale. Pain catastrophizing was assessed using the Coping Strategy Questionnaire (CSQ) subscale. Muscle strength of knee extension and 30-s chair stand test (30CST) were also assessed. Path analysis was performed to test the hypothetical model. Goodness of fit of models were assessed by using statistical parameters such as the chi-square value, goodness of fit index (GFI), adjusted goodness of fit index (AGFI), comparative fit index (CFI), and root mean square error of approximation (RMSEA).ResultsThe chi-square values were not significant (chi-square = 0.283, p = 0.594), and the indices of goodness of fit were high, implying a valid model (GFI = 1.000; AGFI = 0.997; CFI = 1.000; RMSEA = 0.000). Pain was influenced significantly by muscle strength and ADL; muscle strength was influenced significantly by ADL via 30CST; ADL was influenced by pain catastrophizing.ConclusionThe relationship between pain catastrophizing with pain worsening are mediated by muscle weakness and disability.  相似文献   
2.
ObjectiveThe Hand Test System (HTS) is an engineered-sensorized glove that has been originally developed in the neuroscientific field for the evaluation of hand fingers’ speed movement. This pilot-study aimed to evaluate the reproducibility of HTS analysis in rheumatoid arthritis (RA), correlating glove-derived parameters with clinical disease activity indexes, self-reported disability-related questionnaires and hand strength.MethodsFifty-five RA patients and fifty age and sex matched healthy controls (HCs) performed HTS analysis. The glove recognized the touch speed between the finger tips during standard sequences of movements, providing three quantitative parameters: touch duration (TD), inter-tapping interval (ITI) and movement rate (MR). These variables were correlated with Health Assessment Questionnaire (HAQ), Health Assessment Questionnaire-Disease Index (HAQ-DI), Hand Disability Index (HDI), Hand Grip Strength (HGS), DAS28-CRP, CDAI and SDAI.ResultsIntraclass correlation coefficient was 0.93 (CI: 0.92, 0.95). RA patients showed significantly slower TD, ITI and MR than HCs, for all classes of disease activity (P < 0.001). All HTS parameters correlated significantly with HAQ, HAQ-DI, HDI, HGS, DAS28-CRP, SDAI, CDAI (between P < 0.05 and P < 0.001). Of note, also RA patients in clinical remission showed a significantly higher TD compared with HCs (P < 0.001).ConclusionHTS seems a new safe and fast tool to evaluate rheumatoid hand's functionality, measuring the speed of finger movements. Furthermore, the HTS parameters significantly correlate with quality of life, disease activity, hand strength and perceived hand disability, evaluating also potential hand motor impairment in RA clinical remission.  相似文献   
3.
4.
BackgroundFew population-based studies have examined the association between disability and personal wellbeing (PWB) among working-age adults.Objective/Hypothesis: To determine: (1) the magnitude of differences in wellbeing between working-age adults with and without disability in contemporary samples representative of the UK population; and (2) whether the size of any observed differences between people with and without disability is moderated by age, gender, ethnicity, partnership status, educational attainment or employment status.MethodsSecondary analysis of data from three national cross-sectional surveys.ResultsIn each survey, people with disability scored lower than people without disability on all four indicators of PWB. Adjusting for the main effects of potentially moderating variables reduced the effect size of disability on PWB by an average of 24%. Subsequently adjusting for the two-way interaction terms between disability and potentially moderating variables reduced the effect size of disability (main effect) on PWB by an additional average of 73%. PWB among people with disability was significantly lower for: (1) men; (2) younger people; (3) those who belong to the majority ethnic group (white British); (4) those without a partner; and (5) people with lower socio-economic position.ConclusionsOur findings indicate that demographic characteristics and exposure to specific social determinants of poor health play a major role in the negative association between disability and personal wellbeing. A more sophisticated understanding of how social determinants interact to produce inequities associated with identities such as disability, gender, race, sexuality, and class (intersectionality) can inform effective policy interventions.  相似文献   
5.
IntroductionThere is little information on the late stages of parkinsonism.MethodsWe conducted a multicentre study in 692 patients with late stage parkinsonism in six European countries. Inclusion criteria were disease duration of ≥7 years and either Hoehn and Yahr stage ≥4 or Schwab and England score of 50 or less.ResultsAverage disease duration was 15.4 (SD 7.7) years and mean total UPDRS score was 82.7 (SD 22.4). Dementia according to MDS-criteria was present in 37% of patients. Mean levodopa equivalence dose was 874.1 (SD 591.1) mg/d. Eighty two percent of patients reported falls, related to freezing (16%) or unrelated to freezing (21% of patients) or occurring both related and unrelated to freezing (45%), and were frequent in 26%. Moderate-severe difficulties were reported for turning in bed by 51%, speech by 43%, swallowing by 16% and tremor by 11%. Off-periods occurred in 68% and were present at least 50% of the day in 13%, with morning dystonia occurring in 35%. Dyskinesias were reported by 45% but were moderate or severe only in 7%. Moderate-severe fatigue, constipation, urinary symptoms and nocturia, concentration and memory problems were encountered by more than half of participants. Hallucinations (44%) or delusions (25%) were present in 63% and were moderate-severe in 15%. The association with overall disability was strongest for severity of falls/postural instability, bradykinesia, cognitive score and speech impairment.ConclusionThese data suggest that current treatment of late stage parkinsonism in the community remains insufficiently effective to alleviate disabling symptoms in many patients.  相似文献   
6.
BackgroundThere is substantial evidence that pain intensity and sleep are related, with findings generally suggesting more support for the influence of sleep on pain intensity than vice versa. However, the strength and direction of the relationship has been found to vary among different populations, with few studies in individuals with chronic physical disabilities.ObjectiveExamine the directionality of the sleep and pain relationship in individuals with chronic physical disabilities.MethodsCross-lagged effects models were generated using data from a longitudinal observational survey study of individuals (N = 1660) with multiple sclerosis (MS), muscular dystrophy (MD), post-polio syndrome (PPS), and spinal cord injury (SCI). Models evaluated the correlational effects of sleep disturbance and pain intensity, as well as the cross-lagged effects of sleep disturbance to pain intensity and vice versa.ResultsThe effects of pain on sleep were stronger than sleep on pain, although the magnitude of the effects were both relatively weak. Analyses within individual samples were consistent with the overall sample results for MS, MD, and PPS. In the SCI sample the magnitude and direction of the cross-lagged model paths were more variable than in the other samples.ConclusionsThe relationship between pain intensity and sleep disturbance appears bi-directional, but the effects are small in a sample of individuals with long-term disabilities. The temporal effects of pain on sleep disturbance appear stronger than the effects of sleep disturbance on pain intensity. Future research is needed to better understand this relationship in the context of pain and/or sleep disturbance treatments.  相似文献   
7.
随着我国老龄化程度的日趋加剧,目前其社会需求与现有医养护模式相去甚远,因而构建完善的社会化养老服务体系,扩展医养护内涵与理念,创新医养护融合模式,是解决二者现实矛盾的重要节点。本文总结分析了三级医联体框架下医养护结合养老模式现状,明确了医养护的界定,及其存在制约原因与解决策略,认为主要是我国日益增长的老龄化社会问题与目前医护养发展配套设施不健全有关,并从传统观念、法律政策、规范制度、人才建设、专业设置、信息化等几个方面提出对策建议,以完善三级医联体框架下医养护服务体系,促进医养护结合模式协调发展。  相似文献   
8.
BackgroundService animals are an invaluable resource to improving health among individuals with disabilities, and their use is steadily growing. Yet, United States’ current federal and state policies surrounding service animals are contradictory and burdensome, and often do not adequately protect the rights of service animal handlers.ObjectiveTo review each state’s service animal policies surrounding criminal interference, misrepresentation of a service animal, and public accessibility. To also identify inconsistencies among states’ individual policies, between state policies, and between state and federal policies, and discuss the implications of these inconsistencies.MethodsWestlaw legal research database was used to comprehensively review each state’s policies regarding the use of a service animal.Results26 states have one or more policies that are incongruous with the Americans with Disabilities Act. Further, 34 states have contradictions within their own policies and between other states. 31 states provide protections against fraudulent service animals, and there are variations in the degree of protection and ability to enforce these laws.ConclusionsBecause service animals are a vital resource to this particularly vulnerable population, it is imperative that our policies encourage their use and protect the rights of handlers. Yet, inconsistencies among current policies create confusion and ultimately deter individuals with disabilities from taking full advantage of their service animal. We are in need of clear, cohesive policy at all levels of government in order to improve health literacy and ensure that those with disabilities are able to benefit from the positive health impacts of a service animal.  相似文献   
9.
The discomfort reported by the general public at the prospect of personal contact with marginalised groups is an expression of the stigma they experience. This has been widely studied in relation to ethnic minorities and immigrants but less so for persons with disabilities. A national survey with a representative sample of over 1100 Irish adults provided an opportunity to examine reported discomfort with persons who had different impairments, including mental health conditions, with four other minority groups. Moreover, the personal and situational variables associated with expressions of discomfort were identified.Respondents were most comfortable having persons with physical and sensorial disabilities living in their neighbourhood or in their workplace but less so for persons with intellectual disabilities and even less for people with mental health conditions. They were much less comfortable with the four other social groups: gay, lesbian or bisexual people; Eastern European migrant workers; black and ethnic minority groups and least of all, travellers. Moreover, a factor analysis confirmed that the scores given to the impaired groups were significantly correlated with each other but less so with the other four social groupings, although these were significantly inter-correlated among themselves. Respondents who were more comfortable with both sets of minority groups tended to have more social connections in their personal lives and to reside in towns or villages rather than cities. They also expressed more positive attitudes to the inclusion of persons with disabilities in Irish society.The gradient in levels of public discomfort across minority groups may provide a sensitive indicator of the differential stigma experienced by persons with impairments within societies but there remains the possibility that an alliance with other minority groups would also help to promote more positive attitudes and reduce their wider social exclusion.  相似文献   
10.
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