收费全文 | 40675篇 |
免费 | 4307篇 |
国内免费 | 3225篇 |
耳鼻咽喉 | 317篇 |
儿科学 | 480篇 |
妇产科学 | 521篇 |
基础医学 | 4667篇 |
口腔科学 | 760篇 |
临床医学 | 5435篇 |
内科学 | 5904篇 |
皮肤病学 | 351篇 |
神经病学 | 2203篇 |
特种医学 | 1572篇 |
外国民族医学 | 17篇 |
外科学 | 4030篇 |
综合类 | 7155篇 |
现状与发展 | 17篇 |
一般理论 | 6篇 |
预防医学 | 2983篇 |
眼科学 | 981篇 |
药学 | 4711篇 |
37篇 | |
中国医学 | 2779篇 |
肿瘤学 | 3281篇 |
2024年 | 167篇 |
2023年 | 695篇 |
2022年 | 1673篇 |
2021年 | 2352篇 |
2020年 | 1830篇 |
2019年 | 1546篇 |
2018年 | 1486篇 |
2017年 | 1480篇 |
2016年 | 1295篇 |
2015年 | 1949篇 |
2014年 | 2493篇 |
2013年 | 2256篇 |
2012年 | 3269篇 |
2011年 | 3408篇 |
2010年 | 2350篇 |
2009年 | 1850篇 |
2008年 | 2321篇 |
2007年 | 2077篇 |
2006年 | 1983篇 |
2005年 | 1975篇 |
2004年 | 1373篇 |
2003年 | 1322篇 |
2002年 | 1087篇 |
2001年 | 875篇 |
2000年 | 841篇 |
1999年 | 807篇 |
1998年 | 529篇 |
1997年 | 475篇 |
1996年 | 383篇 |
1995年 | 360篇 |
1994年 | 315篇 |
1993年 | 222篇 |
1992年 | 230篇 |
1991年 | 193篇 |
1990年 | 147篇 |
1989年 | 107篇 |
1988年 | 110篇 |
1987年 | 84篇 |
1986年 | 82篇 |
1985年 | 60篇 |
1984年 | 39篇 |
1983年 | 30篇 |
1982年 | 21篇 |
1981年 | 12篇 |
1980年 | 10篇 |
1979年 | 10篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1938年 | 2篇 |
1929年 | 2篇 |
Method: This is a randomized study registered in Chinese Clinical Trial Registry (ChiCTR-IOR-17011289). Eighty rural left-behind elderly people who had a Geriatric Depression Scale (GDS) score between 11 and 25 were randomly assigned to the intervention (n?=?40) and control group (n?=?40). The intervention group received both MBAT and regular treatment for 8 weeks while the control group received regular treatment. Both groups were assessed with the GDS, Beck Anxiety Inventory (BAI), and Oxford Happiness Questionnaire (OHQ) at baseline, immediately post-intervention, and at 3 months post-intervention.
Results: There were a total of 73 participants that completed the intervention. The scores of GDS and BAI decreased significantly, but the scores of OHQ increased significantly in the intervention group after 8 sessions of MBAT (P?<?.01). The reduction in depression symptoms after the intervention was maintained at the 3-month follow-up. Significant differences in GDS, BAI, and OHQ scores were observed between the intervention group and the control group (P?<?.01).
Conclusion: MBAT produced a significantly greater reduction in depressive symptoms than regular care in rural left-behind elderly.
Clinical or methodological significance of this article: A modified behavioral activation (BA) psychotherapy can significantly reduce the recurrence and seriousness of depression symptoms in the left-behind elderly with mild to moderate depression. This study also suggests that further study of the MBAT as an intervention will provide a direction for the management of mental health in rural left-behind elders. 相似文献
Methods: Cross-sectional data were derived from Wave 1 of the Study on Global AGEing and Adult Health. Participants were categorized into complete mental health (CMH), complete mental illness (CMI), and moderate mental health (MMH) groups. Multinomial logistic regressions were used.
Results: The prevalence of CMH, CMI, and MMH in China was 18%, 16%, and 66%, respectively. Being female, unmarried, younger, and feeling unhealthy were more likely to result in placement in the CMI category. Employment, education, and cognitive function were identified as important protective factors of CMH. Age, income, urban or rural residence, and physical function difficulty were associated with all three categories.
Discussion: We demonstrated the utility of the two continua model in identifying mental health needs in Chinese contexts. The findings suggest that future policy reforms and clinical interventions should establish a more comprehensive mental health category as a screening tool nationwide. The promotion of social engagement could play an important role in treating mental illness and improving positive mental health. 相似文献