全文获取类型
收费全文 | 8822篇 |
免费 | 541篇 |
国内免费 | 91篇 |
专业分类
耳鼻咽喉 | 70篇 |
儿科学 | 317篇 |
妇产科学 | 107篇 |
基础医学 | 749篇 |
口腔科学 | 110篇 |
临床医学 | 1432篇 |
内科学 | 739篇 |
皮肤病学 | 84篇 |
神经病学 | 1762篇 |
特种医学 | 182篇 |
外科学 | 566篇 |
综合类 | 1099篇 |
预防医学 | 1072篇 |
眼科学 | 65篇 |
药学 | 590篇 |
7篇 | |
中国医学 | 309篇 |
肿瘤学 | 194篇 |
出版年
2024年 | 18篇 |
2023年 | 214篇 |
2022年 | 413篇 |
2021年 | 557篇 |
2020年 | 448篇 |
2019年 | 479篇 |
2018年 | 502篇 |
2017年 | 383篇 |
2016年 | 353篇 |
2015年 | 278篇 |
2014年 | 631篇 |
2013年 | 678篇 |
2012年 | 480篇 |
2011年 | 622篇 |
2010年 | 413篇 |
2009年 | 377篇 |
2008年 | 443篇 |
2007年 | 380篇 |
2006年 | 291篇 |
2005年 | 223篇 |
2004年 | 178篇 |
2003年 | 148篇 |
2002年 | 137篇 |
2001年 | 94篇 |
2000年 | 90篇 |
1999年 | 63篇 |
1998年 | 57篇 |
1997年 | 73篇 |
1996年 | 45篇 |
1995年 | 51篇 |
1994年 | 41篇 |
1993年 | 33篇 |
1992年 | 19篇 |
1991年 | 15篇 |
1990年 | 13篇 |
1989年 | 12篇 |
1988年 | 23篇 |
1987年 | 12篇 |
1986年 | 14篇 |
1985年 | 24篇 |
1984年 | 22篇 |
1983年 | 14篇 |
1982年 | 12篇 |
1981年 | 11篇 |
1980年 | 11篇 |
1979年 | 16篇 |
1978年 | 9篇 |
1977年 | 9篇 |
1976年 | 9篇 |
1975年 | 6篇 |
排序方式: 共有9454条查询结果,搜索用时 15 毫秒
41.
Wim Jorritsma Grietje E. de Vries Jan H. B. Geertzen Pieter U. Dijkstra Michiel F. Reneman 《European spine journal》2010,19(10):1695-1701
The first aim of this study was to translate the Neck Pain and Disability Scale (NPAD) from English into Dutch producing the
NPAD–Dutch Language Version (DLV). The second aim was to analyze test–retest reliability and agreement of the NPAD–DLV and
the Neck Disability Index (NDI)–DLV. The NPAD was translated according to established guidelines. Thirty-four patients (mean
age 37.5 years, 68% female) with chronic neck pain (CNP), within an outpatient rehabilitation setting, participated in this
study. The NPAD–DLV and the NDI–DLV were filled out twice with a mean test–retest interval of 18 days. The intraclass correlation
coefficient of the NPAD–DLV was 0.76 (95% confidence interval (CI) 0.57–0.87) and of the NDI–DLV 0.84 (95% CI 0.69–0.92).
The limits of agreement of the NPAD–DLV and the NDI–DLV were, respectively, ±20.9 (scale 0–100) and ±6.5 (scale 0–50). The
reliability of the NPAD–DLV and the NDI–DLV was acceptable for patients with CNP. The variation (‘instability’) in the NPAD–DLV
total scores was relatively large and larger than the variation of the NDI–DLV. 相似文献
42.
目的:了解腺性膀胱炎患者的焦虑和抑郁状况及影响因素,为制定相应对策提供依据。方法:采用Zung焦虑自评量表(SAS)、抑郁自评量表(SDS)对120例女性腺性膀胱炎患考进行现况调查。采用SPSS13进行统计分析。结果:女性腺性膀胱炎患者焦虑和抑郁发生率、得分均高于中国常模,与文化程度、收入和病程具有相关性。结论:女性腺性膀胱炎患者存在明显的焦虑和抑郁现象且和多因素相关,有必要行心理干预和综合治疗。 相似文献
43.
Objective: To evaluate the effects of an increase in the intensity of rehabilitation on the functional outcome of patients with traumatic brain injury (TBI).
Design and methods: Sixty-eight patients (age 12-65 years) with moderate-to-severe TBI were included. They were randomized into high (4-hour/day) or control (2-hour/day) intensity rehabilitation programmes at an average of 20 days after the injury. The programmes ended when the patients achieved independence in daily activities or when 6 months had passed.
Outcome and results: No significant differences were found in the Functional Independence Measure (FIM) (primary outcome) and Neurobehavioural Cognitive Status Examination (NCSE) total scores between the two groups. There were significantly more patients in the high intensity group than in the control group who achieved a maximum FIM total score at the third month (47% vs. 19%, p = 0.015) and a maximum Glasgow Outcome Scale (GOS) score at the second (28% vs. 8%, p = 0.034) and third months (34% vs. 14%, p = 0.044).
Conclusions: Early intensive rehabilitation may improve the functional outcome of patients with TBI in the early months post-injury and hence increase the chance of their returning to work early. Intensive rehabilitation in this study speeded up recovery rather than changed the final outcome. 相似文献
Design and methods: Sixty-eight patients (age 12-65 years) with moderate-to-severe TBI were included. They were randomized into high (4-hour/day) or control (2-hour/day) intensity rehabilitation programmes at an average of 20 days after the injury. The programmes ended when the patients achieved independence in daily activities or when 6 months had passed.
Outcome and results: No significant differences were found in the Functional Independence Measure (FIM) (primary outcome) and Neurobehavioural Cognitive Status Examination (NCSE) total scores between the two groups. There were significantly more patients in the high intensity group than in the control group who achieved a maximum FIM total score at the third month (47% vs. 19%, p = 0.015) and a maximum Glasgow Outcome Scale (GOS) score at the second (28% vs. 8%, p = 0.034) and third months (34% vs. 14%, p = 0.044).
Conclusions: Early intensive rehabilitation may improve the functional outcome of patients with TBI in the early months post-injury and hence increase the chance of their returning to work early. Intensive rehabilitation in this study speeded up recovery rather than changed the final outcome. 相似文献
44.
Mayer LS Bay RC Politis A Steinberg M Steele C Baker AS Rabins PV Lyketsos CG 《International journal of geriatric psychiatry》2006,21(10):930-936
CONTEXT: Major depression affects about 25% of patients with Alzheimer's disease (AD) and has serious adverse consequences for patients as well as caregivers. Studies of treatments for depression in AD, like most treatment studies, depend on the ability of the scales used to measure outcome to detect a difference between the effects of treatment and control, particularly in trials conducted over waves. OBJECTIVE: To compare the ability of three depression scales, and some of their subscales, to detect the difference in the effects of drug (treatment) and placebo (control). DESIGN: Comparison of three scales of depression in terms of percent variance explained as indicated by the adjusted or partial eta-squared for the effect of drug versus placebo, controlling for baseline depression, in a randomized, placebo-controlled, parallel, 12-week, clinical trial of sertraline for the treatment of depression with AD. SETTING: University outpatient clinic. PARTICIPANTS: Forty-four patients with probable Alzheimer's disease and Major Depressive Episode. OUTCOME MEASURES: The Cornell Scale for Depression in Dementia (CSDD), the Hamilton Depression Rating Scale (HDRS), and the Neuropsychiatric-Inventory Mood Domains (NPI-M). RESULTS: Examination of the treatment effects as indicated by the partial eta-squared's for each scale at each wave, revealed a slight, but not significant, advantage for the use of the CSDD over the HDRS, and a significant advantage for the use of either of these over the NPI-M. Treatment effects, as reflected in the partial eta-squared's computed for the subscales at each wave, were significant for all four subscales, and were largest for the CSDD 'mood' subscale although they were not significantly greater than for the other subscales. CONCLUSIONS: The CSDD, and particularly its mood subscale, appears to be more sensitive than the HDRS, it's subscales or the NPI-M, for comparing drug to placebo in treating major depression in AD patients. Treatment effects as reflected in the partial eta-squared's were largest on the CSDD mood subscale and increased over time. The pattern for the other subscales was non-monotonic over waves and resembled the pattern for the entire scale. Perhaps combining the CSDD two subscales obscures the treatment effects for the separate subscales. 相似文献
45.
Kallol Ray Chaudhuri Pablo Martinez-Martin Anthony H V Schapira Fabrizio Stocchi Kapil Sethi Per Odin Richard G Brown William Koller Paolo Barone Graeme MacPhee Linda Kelly Martin Rabey Doug MacMahon Sue Thomas William Ondo David Rye Alison Forbes Susanne Tluk Vandana Dhawan Annette Bowron Adrian J Williams Charles W Olanow 《Movement disorders》2006,21(7):916-923
Nonmotor symptoms (NMS) of Parkinson's disease (PD) are not well recognized in clinical practice, either in primary or in secondary care, and are frequently missed during routine consultations. There is no single instrument (questionnaire or scale) that enables a comprehensive assessment of the range of NMS in PD both for the identification of problems and for the measurement of outcome. Against this background, a multidisciplinary group of experts, including patient group representatives, has developed an NMS screening questionnaire comprising 30 items. This instrument does not provide an overall score of disability and is not a graded or rating instrument. Instead, it is a screening tool designed to draw attention to the presence of NMS and initiate further investigation. In this article, we present the results from an international pilot study assessing feasibility, validity, and acceptability of a nonmotor questionnaire (NMSQuest). Data from 123 PD patients and 96 controls were analyzed. NMS were highly significantly more prevalent in PD compared to controls (PD NMS, median = 9.0, mean = 9.5 vs. control NMS, median = 5.5, mean = 4.0; Mann-Whitney, Kruskal-Wallis, and t test, P < 0.0001), with PD patients reporting at least 10 different NMS on average per patient. In PD, NMS were highly significantly more prevalent across all disease stages and the number of symptoms correlated significantly with advancing disease and duration of disease. Furthermore, frequently, problems such as diplopia, dribbling, apathy, blues, taste and smell problems were never previously disclosed to the health professionals. 相似文献
46.
47.
Guzel A Er U Tatli M Aluclu U Ozkan U Duzenli Y Satici O Guzel E Kemaloglu S Ceviz A Kaplan A 《Neurosurgical review》2008,31(4):439-445
Elevated serum neuron-specific enolase levels are correlated with brain cell damage. Low scores according to Glasgow Coma Scale are also considered as serious poor prognostic factor. The aims of the study were to investigate whether there is a correlation between the two measurements in patients with traumatic brain injury and whether serum neuron-specific enolase levels have potential as a screening test to predict outcome. A total of 169 consecutive patients with traumatic brain injury admitted to our clinic between 2002 and 2005 are included in this study. Those patients, who had any major health problem before trauma, were excluded from the study. However, patients with isolated head injury were included in the study. Serial serum neuron-specific enolase concentrations taken at the first 2, 24, and 48 h after traumatic brain injury were analyzed. A computed tomography was performed on each patient on admission. Their Glasgow Coma Scale scores were recorded serially. The relationship between Glasgow Coma Scale scores and the serum neuron-specific enolase levels were assessed by statistical methods. There was a significant negative correlation between the serum neuron-specific enolase levels and Glasgow Coma Scale scores. The levels of neuron-specific enolase were significantly higher in the patients who died in 30 days after trauma and whose scores were lower than or equal to 8 points in Glasgow Coma Scale. Although there are several serious limitations of the use of neuron-specific enolase as a biomarker in traumatic brain injury (i.e., hypoperfusion, extracranial trauma, bleeding, liver, or kidney damage also increase the level of neuron-specific enolase), its concentrations may be useful as a practical and helpful screening test to identify neurotrauma patients who are at increased risk and may provide supplementary estimation with radiological and clinical findings. 相似文献
48.
Kathleen M. Adelgais Lorin Browne Maija Holsti Ryan R. Metzger Shannon Cox Murphy Nanette Dudley 《Journal of pediatric surgery》2014
Background
Guidelines for evaluating the cervical spine in pediatric trauma patients recommend cervical spine CT (CSCT) when plain radiographs suggest an injury. Our objective was to compare usage of CSCT between a pediatric trauma center (PTC) and referral general emergency departments (GEDs).Methods
Patient data from a pediatric trauma registry from 2002 to 2011 were analyzed. Rates of CSI and CSCT of patients presenting to the PTC and GED were compared. Factors associated with use of CSCT were assessed using multivariate logistic regression.Results
5148 patients were evaluated, 2142 (41.6%) at the PTC and 3006 (58.4%) at the GED. Groups were similar with regard to age, gender, GCS, and triage category. GED patients had a higher median ISS (14 vs. 9, p < 0.05) and more frequent ICU admissions (44.3% vs. 26.1% p < 0.05). CSI rate was 2.1% (107/5148) and remained stable. CSCT use increased from 3.5% to 16.1% over time at the PTC (mean 9.6% 95% CI = 8.3, 10.9) and increased from 6.8% to 42.0% (mean 26.9%, CI = 25.4, 28.4) at the GED. Initial care at a GED remained strongly associated with CSCT.Conclusions
Despite a stable rate of CSI, rate of CSCT increased significantly over time, especially among patients initially evaluated at a GED. 相似文献49.
《REV BRAS REUMATOL》2014,54(5):409-413
ObjectivesFibromyalgia (FM) is a complex syndrome that is characterized by lasting and diffuse chronic musculoskeletal pain, derived from non‐inflammatory causes and classically associated with the presence of specific tender points. However, studies have highlighted other important symptoms associated with a lower quality of life (QOL) in FM, such as sleep disturbances and alexithymia. This study aimed to investigate the pain, sleep and alexithymia patterns of FM patients treated in a Brazilian tertiary center.Methods20 patients with FM who were followed‐up in the Rheumatology outpatient clinic of a Brazilian tertiary center (Faculdade de Medicina de São José do Rio Preto – FAMERP, São Paulo, Brazil) and 20 patients without FM from other outpatient services of the FAMERP completed a clinical and socio‐demographic questionnaire, the Fibromyalgia Impact Questionnaire (FIQ), the Pittsburgh Sleep Quality Index (PSQI), the Toronto Alexithymia Scale (TAS‐20) and the SF‐36 (WHOQOL).ResultsThe patients with FM presented worse performances in all QOL dimensions of the SF‐36 and higher scores on the PSQI (p = 0.01), and the TAS‐20 (p = 0.02). Patients with FM also scored significantly higher in all specific domains of PSQI and TAS‐20.DiscussionThe present data were in accordance with literature, disclosing a worse performance of patients with FM on pain impact, sleep complains and more presence of alexithymia.ConclusionStudies have disclosed the presence of important and frequently underdiagnosed symptoms beyond pain complaints in FM, such as sleep complaints and alexithymia, and a better knowledge of such disturbances might improve FM patients’ approach and treatment. 相似文献
50.
《Breast (Edinburgh, Scotland)》2014,23(5):676-682
Optimal outcome for early breast cancer patients receiving adjuvant chemotherapy requires adequate dose delivery, commonly defined as >85% of planned dose of chemotherapy agents. Outside the clinical trial setting, reports from community oncology centres have demonstrated that a significant proportion of patients fail to receive this dose intensity, with neutropenia being the most commonly cited reason for sub-optimal treatment. Data collected prospectively on 1655 patient treated in a single breast cancer centre demonstrates that patients at risk of sub-optimal dose delivery can be identified by routine assessment of neutropenic events during the first cycle. The uniform administration of secondary G-CSF for all subsequent cycles enables dose delivery ≥85%, which was shown to lead to improved survival outcomes when compared with those patients who received <85%. 相似文献