收费全文 | 22847篇 |
免费 | 2096篇 |
国内免费 | 23篇 |
耳鼻咽喉 | 228篇 |
儿科学 | 607篇 |
妇产科学 | 587篇 |
基础医学 | 2675篇 |
口腔科学 | 404篇 |
临床医学 | 2362篇 |
内科学 | 4630篇 |
皮肤病学 | 384篇 |
神经病学 | 2159篇 |
特种医学 | 785篇 |
外国民族医学 | 3篇 |
外科学 | 3454篇 |
综合类 | 516篇 |
一般理论 | 43篇 |
预防医学 | 2458篇 |
眼科学 | 310篇 |
药学 | 1574篇 |
中国医学 | 30篇 |
肿瘤学 | 1757篇 |
2021年 | 322篇 |
2020年 | 203篇 |
2019年 | 397篇 |
2018年 | 497篇 |
2017年 | 344篇 |
2016年 | 317篇 |
2015年 | 405篇 |
2014年 | 567篇 |
2013年 | 847篇 |
2012年 | 1166篇 |
2011年 | 1193篇 |
2010年 | 742篇 |
2009年 | 662篇 |
2008年 | 1114篇 |
2007年 | 1200篇 |
2006年 | 1204篇 |
2005年 | 1175篇 |
2004年 | 1075篇 |
2003年 | 1005篇 |
2002年 | 922篇 |
2001年 | 609篇 |
2000年 | 641篇 |
1999年 | 569篇 |
1998年 | 263篇 |
1997年 | 191篇 |
1996年 | 211篇 |
1995年 | 234篇 |
1994年 | 178篇 |
1993年 | 171篇 |
1992年 | 423篇 |
1991年 | 416篇 |
1990年 | 364篇 |
1989年 | 367篇 |
1988年 | 338篇 |
1987年 | 326篇 |
1986年 | 291篇 |
1985年 | 306篇 |
1984年 | 265篇 |
1983年 | 221篇 |
1982年 | 172篇 |
1981年 | 149篇 |
1979年 | 241篇 |
1978年 | 177篇 |
1977年 | 143篇 |
1975年 | 141篇 |
1974年 | 149篇 |
1973年 | 192篇 |
1972年 | 189篇 |
1971年 | 161篇 |
1969年 | 148篇 |
Background
Long-term psychological well-being and quality-of-life are important considerations when deciding whether to undergo active treatment for low-risk localised prostate cancer.Objective
To assess the long-term effects of active surveillance (AS) and/or watchful waiting (WW) on psychological and quality-of-life outcomes for low-risk localised prostate cancer patients.Design, setting, and participants
The Prostate Cancer Care and Outcome Study is a population-based prospective cohort study in New South Wales, Australia. Participants for these analyses were low-risk localised prostate cancer patients aged <70 yr at diagnosis and participated in the 10-yr follow-up.Outcome measurements and statistical analysis
Validated instruments assessed outcomes relating to six health-related quality-of-life and nine psychological domains relevant to prostate cancer patients. Adjusted mean differences (AMDs) in outcome scores between prostate cancer treatment groups were estimated using linear regression.Results and limitations
At 9–11 yr after diagnosis, patients who started AS/WW initially had (1) higher levels of distress and hyperarousal than initial radiation/high-dose-rate brachytherapy patients (AMD = 5.9; 95% confidence interval or CI [0.5, 11.3] and AMD = 5.4; 95% CI [0.2, 10.5], respectively), (2) higher levels of distress and avoidance than initial low-dose-rate brachytherapy patients (AMD = 5.3; 95% CI [0.2, 10.3] and AMD = 7.0; 95% CI [0.5, 13.5], respectively), (3) better urinary incontinence scores than initial radical prostatectomy patients (AMD = –9.1; 95% CI [–16.3, –2.0]), and (4) less bowel bother than initial radiation/high-dose-rate brachytherapy patients (AMD = –16.8; 95% CI [–27.6, –6.0]). No other significant differences were found. Limitations include participant attrition, inability to assess urinary voiding and storage symptoms, and nonrandom treatment allocation.Conclusions
Notwithstanding some long-term differences between AS/WW and various active treatment groups in terms of distress, hyperarousal, avoidance, urinary incontinence, and bowel bother, most long-term outcomes were similar between these groups.Patient summary
This study assessed the long-term psychological and quality-of-life impacts of initially monitoring rather than actively treating low-risk prostate cancer. The results suggest that initial monitoring rather than active treatment has only a minor impact on subsequent long-term psychological and quality-of-life outcomes. 相似文献Objective: To evaluate the characteristics associated with improving two or more functional levels and therefore classifying as a substantial responder after an inpatient rehabilitation facility stay in post-resection chordoma patients.
Setting: Acute inpatient rehabilitation facility in the United States.
Methods: A total of 40 patients were admitted to an inpatient rehabilitation facility from 2010–2015 after chordoma resection. Demographics, tumor management information, lengths of stay and functional independence measures on admission and discharge were collected. Substantial responders were identified as individuals who improved two or more functional levels based on total FIM score change. Logistic regression was used to analyze the available data for association of quantitative and categorical variables with being a substantial responder.
Results: The categorical variables analyzed in this study (sex, readmission to an acute hospital, Charlson Comorbidity Index, tumor level, nerve sacrifice, recurrent tumor and metatases) were not associated with being a substantial responder. The quantitative variables age and length of stay at the inpatient rehabilitation facility were individually associated with being a substantial responder, while length of stay at the acute hospital was not.
Conclusions: Patients who were younger were more likely to be classified as substantial responders. Patients with longer lengths of stay at the inpatient rehabilitation facility were also more likely to be classified as substantial responders. 相似文献