全文获取类型
收费全文 | 523篇 |
免费 | 11篇 |
国内免费 | 2篇 |
专业分类
儿科学 | 8篇 |
妇产科学 | 34篇 |
基础医学 | 44篇 |
口腔科学 | 6篇 |
临床医学 | 22篇 |
内科学 | 98篇 |
皮肤病学 | 1篇 |
神经病学 | 33篇 |
特种医学 | 7篇 |
外科学 | 70篇 |
综合类 | 2篇 |
预防医学 | 115篇 |
眼科学 | 11篇 |
药学 | 13篇 |
肿瘤学 | 72篇 |
出版年
2023年 | 39篇 |
2022年 | 51篇 |
2021年 | 37篇 |
2020年 | 36篇 |
2019年 | 52篇 |
2018年 | 37篇 |
2017年 | 35篇 |
2016年 | 16篇 |
2015年 | 14篇 |
2014年 | 43篇 |
2013年 | 30篇 |
2012年 | 11篇 |
2011年 | 31篇 |
2010年 | 14篇 |
2009年 | 28篇 |
2008年 | 18篇 |
2007年 | 19篇 |
2006年 | 9篇 |
2005年 | 6篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 1篇 |
1999年 | 1篇 |
排序方式: 共有536条查询结果,搜索用时 41 毫秒
81.
82.
Dietrich T Culler C Garcia RI Henshaw MM 《Journal of the American Dental Association (1939)》2008,139(11):1507-1517
BackgroundThe authors evaluated racial/ethnic differences and their socioeconomic determinants in the oral health status of U.S. children, as reported by parents.MethodsThe authors used interview data from the 2003 National Survey of Children's Health, a large representative survey of U.S. children. They calculated weighted, nationally representative prevalence estimates for non-Hispanic whites, non-Hispanic blacks and Hispanics, and they used logistic regression to explore the association between parents' reports of fair or poor oral health and various socioeconomic determinants of oral health.ResultsThe results showed significant racial/ethnic differences in parental reports of fair or poor oral health, with prevalences of 6.5 percent for non-Hispanic whites, 12.0 percent for non-Hispanic blacks and 23.4 percent for Hispanics. Although adjustments for family socioeconomic status (poverty level and education) partially explained these racial/ethnic disparities, Hispanics still were twice as likely as non-Hispanic whites to report their children's oral health as fair or poor, independent of socioeconomic status. The authors did find differences in preventive-care attitudes among groups. However, in multivariate models, such differences did not explain the disparities.ConclusionsSignificant racial/ethnic disparities exist in parental reports of their children's oral health, with Hispanics being the most disadvantaged group. Disparities appear to exist independent of preventive-care attitudes and socioeconomic status. 相似文献
83.
IntroductionAutologous breast reconstruction has evolved from more morbid procedures that sacrificed the abdominal muscle (the TRAM or transverse rectus abdominus muscle flap) to “perforator” flaps. Commercial insurers recognized the higher technical demand of perforator flaps by creating procedural codes with higher professional fees. This study examined whether procedure code discrepancies between insurance payers disproportionally incentivize perforator flaps among the commercially insured.MethodsAutologous breast reconstructions identified from the National Inpatient Sample (NIS) were subdivided into microvascular perforator (85.74, 85.75, 85.76), microvascular TRAM (85.73), and pedicled TRAM flaps (85.72). Demographics, comorbidities and access to care were compared. A logistic regression comparing microvascular reconstructions only was used to identify predictors for perforator flap reconstruction.ResultsA total of 66,968 cases of autologous breast reconstruction were identified. Perforator flaps were more likely among the commercially insured (p < 0.001) and higher insurance quartiles (p < 0.001).When comparing microvascular reconstruction, perforator flaps were 1.72 (p < 0.001) times more likely among the commercially insured. As compared to the lowest income quartile, the fourth quartile had an odds ratio of 1.36 (p < 0.001) for perforator flap reconstruction.ConclusionThe presence of a separate perforator flap billing code among the commercially insured may be exacerbating existing socioeconomic disparities in breast cancer reconstruction. 相似文献
84.
85.
Objectives: An essential function of public health is to conduct research and in Missouri, a research agenda was initiated to promote
the health and well being of women and children. In 2005, a survey was emailed to 180 maternal and child health (MCH) researchers
throughout the state, with 130 responding for a 72.2% response rate. These individuals were asked to select research priorities
out of a list of 130 research agenda items, identify personal areas of expertise, and to recommend new research topics. Results: Results focused on identifying research priorities and research experts. The first, of the five leading research priorities,
was researching disparities in terms of age, race, ethnicity, and gender, regarding sexually transmitted diseases, chronic
disease, birth outcomes, prenatal care, access to care, childhood exposure to lead, immunizations and vaccinations, mental
health, substance abuse, and oral health. The four remaining, of the top five specific research priorities, in order of priority,
included (2) reducing barriers to health care access, (3) constructing research ecologically, (4) increasing access to oral
health care for children, and (5) reducing the prevalence of children who are at-risk for being overweight. Of the 130 respondents,
83.1% reported at least one area of expertise, with a mean of 7.4 areas of expertise per respondent (range 0–41). Forty percent
of the respondents reported health care access as an area of expertise, followed by school health, community development,
family support, and pre/post natal care (38.5%, 36.2%, 30.0%, 28.5%, and 26.9%) respectively. Interestingly, only 17.7% of
the respondents reported disparities as their area of expertise. Conclusions: The goal of moving innovations towards changes in practice can only happen when resources are available to assess innovations
and communities are ready to implement those innovations. The prioritization of this MCH research agenda, prioritized by a
community of MCH researchers with expertise in conducting MCH related research, is the first step towards changes in practice,
ultimately leading to improvements in the health of women and children in Missouri. 相似文献
86.
87.
Henri R. Ford 《Journal of pediatric surgery》2019,54(1):1-8
This Presidential Address was given at the 49th Meeting of the American Pediatric Surgical Association, May 03–06, 2018, at JW Marriott Desert Springs Resort & Spa, Palm Desert, California, United States of America. 相似文献
88.
89.
Bussell SA, González-Fernández M. Racial disparities in the development of dysphagia after stroke: further evidence from the Medicare database.
Objective
To describe the relationship between minority race/ethnicity and dysphagia after stroke in a national sample. Unlike the multiple studies that have examined racial disparities in stroke incidence, risk factors, outcomes, and quality of care, the influence of race or ethnicity on dysphagia after stroke has been understudied. We hypothesized that the odds of dysphagia would be higher for Asians compared with Caucasians in the United States given the results of a previous study in the U.S.Design
Observational study.Setting
Conducted using the U.S. National Medicare Medical Provider Analysis and Review Data.Participants
Medicare beneficiaries admitted in 2007 with a stroke diagnosis.Intervention
We selected 382,959 cases with cerebrovascular disease codes with self-identified race/ethnicity of Caucasian, African American, Asian, Hispanic, Native American, or other/unknown. Cases had a diagnosis of cerebrovascular disease, defined as International Classification of Disease, Ninth Revision codes 430 to 438.9. Self-reported race/ethnicity was recorded in the following categories: Caucasian, African American, Asian, Hispanic, Native American, and other/unknown.Main Outcome Measure
Dysphagia after stroke as coded in the data.Results
The adjusted odds ratio (OR) for poststroke dysphagia was higher for Asians and other minority groups compared with Caucasians (Asian: OR, 1.73; 95% confidence interval [CI], 1.60–1.88; Hispanic: OR, 1.50; 95% CI, 1.39–1.63; African American: OR, 1.42; 95% CI, 1.37–1.47; unknown/other: OR, 1.27; 95% CI, 1.16–1.38; Native American; OR, 1.44; 95% CI, 1.22–1.69).Conclusions
Our findings confirm previous research suggesting an association between Asian race and dysphagia after stroke while adding evidence for increased odds in other racial/ethnic minority groups. 相似文献90.