全文获取类型
收费全文 | 27313篇 |
免费 | 2775篇 |
国内免费 | 269篇 |
专业分类
耳鼻咽喉 | 66篇 |
儿科学 | 903篇 |
妇产科学 | 540篇 |
基础医学 | 2730篇 |
口腔科学 | 420篇 |
临床医学 | 5622篇 |
内科学 | 2811篇 |
皮肤病学 | 92篇 |
神经病学 | 3402篇 |
特种医学 | 326篇 |
外科学 | 1969篇 |
综合类 | 2205篇 |
一般理论 | 24篇 |
预防医学 | 6681篇 |
眼科学 | 47篇 |
药学 | 1361篇 |
18篇 | |
中国医学 | 265篇 |
肿瘤学 | 875篇 |
出版年
2024年 | 26篇 |
2023年 | 713篇 |
2022年 | 611篇 |
2021年 | 1353篇 |
2020年 | 1501篇 |
2019年 | 1530篇 |
2018年 | 1400篇 |
2017年 | 1483篇 |
2016年 | 1358篇 |
2015年 | 1300篇 |
2014年 | 1899篇 |
2013年 | 2976篇 |
2012年 | 1550篇 |
2011年 | 1508篇 |
2010年 | 1220篇 |
2009年 | 1180篇 |
2008年 | 1245篇 |
2007年 | 1156篇 |
2006年 | 1012篇 |
2005年 | 800篇 |
2004年 | 674篇 |
2003年 | 559篇 |
2002年 | 484篇 |
2001年 | 371篇 |
2000年 | 327篇 |
1999年 | 269篇 |
1998年 | 225篇 |
1997年 | 204篇 |
1996年 | 146篇 |
1995年 | 159篇 |
1994年 | 139篇 |
1993年 | 150篇 |
1992年 | 108篇 |
1991年 | 96篇 |
1990年 | 71篇 |
1989年 | 86篇 |
1988年 | 65篇 |
1987年 | 61篇 |
1986年 | 62篇 |
1985年 | 55篇 |
1984年 | 36篇 |
1983年 | 31篇 |
1982年 | 30篇 |
1981年 | 16篇 |
1980年 | 24篇 |
1979年 | 23篇 |
1978年 | 9篇 |
1977年 | 10篇 |
1976年 | 11篇 |
1975年 | 14篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
《Health & place》2022
PurposeAccording to the social determinants of health framework, income inequality is a potential risk factor for adverse mental health. However, few studies have explored the mechanisms suspected to mediate this relationship. The current study addresses this gap through a mediation analysis to determine if social support and community engagement act as mediators linking neighbourhood income inequality to maternal anxiety and depressive symptoms within a cohort of new mothers living in the City of Calgary, Canada.MethodsData collected at three years postpartum from mothers belonging to the All Our Families (AOF) cohort were used in the current study. Maternal data were collected between 2012 and 2015 and linked to neighbourhood socioeconomic data from the 2006 Canadian Census. Income inequality was measured using Gini coefficients derived from 2006 after-tax census data. Generalized structural equation models were used to quantify the associations between income inequality and mental health symptoms, and to assess the potential direct and indirect mediating effects of maternal social support and community engagement.ResultsIncome inequality was not significantly associated with higher depressive symptoms (β = 0.32, 95%CI = −0.067, 0.70), anxiety symptoms (β = 0.11, 95%CI = −0.39, 0.60), or lower social support. Income inequality was not associated with community engagement. For the depression models, higher social support was significantly associated with lower depressive symptoms (β = −0.13, 95%CI = −0.15, −0.097), while community engagement was not significantly associated with depressive symptoms (β = 0.059, 95%CI = −0.15, 0.27). Similarly, for the anxiety models, lower anxiety symptoms were significantly associated with higher levels of social support (β = −0.17, 95%CI = −0.20, −0.13) but not with higher levels of community engagement (β = 0.14, 95%CI = −0.14, 0.41).ConclusionThe current study did not find clear evidence for social support or community engagement mediating the relationship between neighbourhood income inequality and maternal mental health. Future investigations should employ a broader longitudinal approach to capture changes in income inequality, potential mediators, and mental health symptomatology over time. 相似文献
5.
6.
《Nursing for Women's Health》2022,26(1):51-62
ObjectiveTo improve health knowledge, facilitate healthy behaviors, and provide social support for a high-risk population of women by implementing a culturally tailored, gender-specific lifestyle intervention program.DesignEvidence-based practice project.Setting/Local ProblemA Chicago neighborhood in Cook County, Illinois, where there are increased rates of diabetes, heart disease, cancer, stroke, hypertension, obesity, preterm birth, and violent crime.ParticipantsFemale residents of the community, ages 19 to 45 years; 12 participants registered for the program, and 11 participants completed the entire 2-month program.Interventions/MeasurementsThe BE WISE Lifestyle Intervention, a culturally tailored, gender-specific behavior change curriculum, was used for this project. An interprofessional team was used to enhance participant experience, and neighborhood collaborations were established to create sustainability of efforts. Pre- and postintervention measures of diet, physical activity, social support, and knowledge acquisition were used to evaluate outcomes.ResultsImprovement was noted for knowledge in most of the content areas, as well as for dietary and physical activity behaviors. All participants rated the program highly and responded positively to the social support experienced in the group.ConclusionCulturally tailored lifestyle interventions can be effective in improving knowledge and encouraging behavior change, especially when delivered in group settings to enhance social support. Community-level collaborations enhance interventions by providing local support and resources for participants. Because behavior change takes time, follow-up at the 6-month and 1-year intervals is recommended to determine longer-term outcomes. 相似文献
7.
《Value in health》2022,25(4):482-491
ObjectivesExisting measures for estimating quality-adjusted life-years are mostly limited to health-related quality of life. This article presents an overview of the development the EQ-HWB (EQ Health and Wellbeing), which is a measure that encompasses health and wellbeing.MethodsStages: (1) Establishing domains through reviews of the qualitative literature informed by a conceptual framework. (2) Generation and selection of items to cover the domains. (3) Face validation of these items through qualitative interviews with 168 patients, social care users, general population, and carers across 6 countries (Argentina, Australia, China, Germany, United Kingdom, United States). (4) Extensive psychometric testing of candidate items (using classical, factor analysis, and item response theory methods) on > 4000 respondents in the 6 countries. Stakeholders were consulted throughout.ResultsA total of 32 subdomains grouped into 7 high-level domains were identified from the qualitative literature and 97 items generated to cover them. Face validation eliminated 36 items, modified 14, and added 3. Psychometric testing of 64 items found little difference in missing data or problems with response distribution, the conceptual model was confirmed except in China, and most items performed well in the item response theory in all countries. Evidence was presented to stakeholders in 2 rounds of consultation to inform the final selection of items for the EQ-HWB (25-item) and the short version of EQ-HWB (9-items).ConclusionsEQ-HWB measures have been developed internationally for evaluating interventions in health, public health, and social care including the impact on patients, social care users, and carers. 相似文献
8.
Loren Saulsberry PhD Ankur Bhargava MD MPH Sharon Zeng BA Jason B. Gibbons PhD Cody Brannan MS Diane S. Lauderdale PhD Robert D. Gibbons PhD 《Health services research》2023,58(4):873-881
Objective
To derive and validate a new ecological measure of the social determinants of health (SDoH), calculable at the zip code or county level.Data Sources and Study Setting
The most recent releases of secondary, publicly available data were collected from national U.S. health agencies as well as state and city public health departments.Study Design
The Social Vulnerability Metric (SVM) was constructed from U.S. zip-code level measures (2018) from survey data using multidimensional Item Response Theory and validated using outcomes including all-cause mortality (2016), COVID-19 vaccination (2021), and emergency department visits for asthma (2018). The SVM was also compared with the existing Centers for Disease Control and Prevention's Social Vulnerability Index (SVI) to determine convergent validity and differential predictive validity.Data Collection/Extraction Methods
The data were collected directly from published files available to the public online from national U.S. health agencies as well as state and city public health departments.Principal Findings
The correlation between SVM scores and national age-adjusted county all-cause mortality was r = 0.68. This correlation demonstrated the SVM's robust validity and outperformed the SVI with an almost four-fold increase in explained variance (46% vs. 12%). The SVM was also highly correlated (r ≥ 0.60) to zip-code level health outcomes for the state of California and city of Chicago.Conclusions
The SVM offers a measurement tool improving upon the performance of existing SDoH composite measures and has broad applicability to public health that may help in directing future policies and interventions. The SVM provides a single measure of SDoH that better quantifies associations with health outcomes. 相似文献9.
目的 探讨宫颈癌幸存者社会疏离现状及其影响因素,为实施针对性干预提供参考。方法选取395例宫颈癌幸存者作为研究对象,采用一般情况调查表、一般疏离感量表、社会影响量表、社会支持评定量表进行调查。结果宫颈癌幸存者一般疏离感量表得分(41.98±6.81)分;家庭人均月收入、治疗后时间、病耻感总分、社会支持总分是社会疏离的主要影响因素(均P<0.05),可以解释46.1%的变异量。结论宫颈癌幸存者社会疏离总体水平呈中等偏高。医护人员应关注宫颈癌幸存者的社会疏离水平,尤其是低收入、治疗后时间短的患者,可通过降低患者病耻感和提高患者社会支持水平,降低其社会疏离水平。 相似文献
10.