全文获取类型
收费全文 | 2363500篇 |
免费 | 176388篇 |
国内免费 | 3520篇 |
学科分类
医药卫生 | 2543408篇 |
出版年
2021年 | 19748篇 |
2019年 | 20093篇 |
2018年 | 27688篇 |
2017年 | 20850篇 |
2016年 | 23488篇 |
2015年 | 26595篇 |
2014年 | 37184篇 |
2013年 | 55234篇 |
2012年 | 76574篇 |
2011年 | 81233篇 |
2010年 | 48111篇 |
2009年 | 45439篇 |
2008年 | 75922篇 |
2007年 | 80693篇 |
2006年 | 81435篇 |
2005年 | 78802篇 |
2004年 | 75260篇 |
2003年 | 72465篇 |
2002年 | 70043篇 |
2001年 | 109083篇 |
2000年 | 111783篇 |
1999年 | 93769篇 |
1998年 | 27133篇 |
1997年 | 23773篇 |
1996年 | 24154篇 |
1995年 | 22804篇 |
1994年 | 20964篇 |
1993年 | 19771篇 |
1992年 | 72081篇 |
1991年 | 70153篇 |
1990年 | 68452篇 |
1989年 | 65722篇 |
1988年 | 60362篇 |
1987年 | 59182篇 |
1986年 | 55260篇 |
1985年 | 53051篇 |
1984年 | 39347篇 |
1983年 | 33433篇 |
1982年 | 19881篇 |
1979年 | 35892篇 |
1978年 | 25667篇 |
1977年 | 21242篇 |
1976年 | 20343篇 |
1975年 | 21801篇 |
1974年 | 26099篇 |
1973年 | 24772篇 |
1972年 | 23192篇 |
1971年 | 22026篇 |
1970年 | 20231篇 |
1969年 | 19300篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
M.-A. Fauroux A. Germa P. Tramini C. Nabet 《Revue d'épidémiologie et de santé publique》2019,67(4):223-231
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France. 相似文献
32.
33.
34.
35.
36.
Widder Randolf A. Lappas Alexandra Rennings Corinna Hild Matthias Roessler Gernot F. Dietlein Thomas S. 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2020,258(11):2581-2581
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild... 相似文献
37.
38.
39.
40.