全文获取类型
收费全文 | 882篇 |
免费 | 41篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 32篇 |
妇产科学 | 71篇 |
基础医学 | 102篇 |
口腔科学 | 3篇 |
临床医学 | 60篇 |
内科学 | 301篇 |
皮肤病学 | 85篇 |
神经病学 | 40篇 |
特种医学 | 25篇 |
外科学 | 54篇 |
综合类 | 9篇 |
预防医学 | 94篇 |
眼科学 | 5篇 |
药学 | 18篇 |
肿瘤学 | 23篇 |
出版年
2023年 | 5篇 |
2022年 | 8篇 |
2021年 | 14篇 |
2020年 | 10篇 |
2019年 | 15篇 |
2018年 | 22篇 |
2017年 | 9篇 |
2016年 | 22篇 |
2015年 | 12篇 |
2014年 | 34篇 |
2013年 | 31篇 |
2012年 | 73篇 |
2011年 | 87篇 |
2010年 | 39篇 |
2009年 | 44篇 |
2008年 | 69篇 |
2007年 | 67篇 |
2006年 | 57篇 |
2005年 | 54篇 |
2004年 | 56篇 |
2003年 | 48篇 |
2002年 | 53篇 |
2001年 | 8篇 |
2000年 | 9篇 |
1999年 | 9篇 |
1998年 | 8篇 |
1997年 | 5篇 |
1996年 | 7篇 |
1995年 | 9篇 |
1994年 | 3篇 |
1992年 | 3篇 |
1991年 | 3篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1971年 | 1篇 |
1965年 | 1篇 |
1964年 | 1篇 |
1963年 | 1篇 |
1961年 | 1篇 |
1941年 | 1篇 |
排序方式: 共有923条查询结果,搜索用时 0 毫秒
1.
Physical activity is an important, but often underused, therapeutic strategy within diabetes care. To date, little is known about the best way to promote physical activity in diabetes care. Physical activity consultation is an intervention designed to promote physical activity behaviour change. This article provides guidelines on how to conduct a physical activity consultation with people who have Type 2 diabetes, and reviews the evidence surrounding the effectiveness of this intervention in this population. The trans-theoretical model is the underlying theory of behaviour change for the physical activity consultation intervention. The review identifies research which supports the use of this model for understanding physical activity behaviour in people with Type 2 diabetes. The review outlines a number of modifiable variables associated with physical activity behaviour change in this population. How each of these variables is addressed within the guidelines for conducting a physical activity consultation is identified. Finally, limited but consistent research highlights the effectiveness of physical activity consultation for promoting physical activity in people with Type 2 diabetes. 相似文献
2.
The effects of cardiovascular disease are substantial in women, yet cardiovascular preventive therapies for women are underused.
The prevalence and impact of many coronary risk factors differ by gender. Coronary risk interventions (eg, using aspirin)
have diverse outcomes in women and men. Results from studies of preventive interventions specific to women (eg, menopausal
hormone therapy) have changed preventive recommendations and clinical practice. 相似文献
3.
Albert H Park Jonathan Warner Nanette Sturgill Stephen C Alder 《Otolaryngology--head and neck surgery》2006,134(5):794-800
OBJECTIVE: Assess parental perceptions of their child's sensorineural hearing loss care. METHODS: Families of pediatric patients diagnosed with a sensorineural hearing loss from 2000 to 2004 were sent a survey asking about their experiences with their child's hearing loss. RESULTS: One hundred eight of 389 families surveyed were studied. Thirteen percent did not know the results of the newborn screening. Twenty-two percent of the primary care physicians were not involved in the child's hearing evaluation. Forty percent of the patients underwent 4 or more audiologic tests before a diagnosis. The most common reason for delayed diagnosis was difficulty in obtaining an appointment with an audiologist. Sixty-two percent of families had difficulties obtaining hearing aids, and 58% noted difficulties obtaining cochlear implants. CONCLUSIONS: Families reported multiple obstacles to obtain timely diagnosis and treatment. Otolaryngologists may need to be more involved in the evaluation and treatment of these patients. EBM rating: C-4. 相似文献
4.
Mersch PP Vastenburg NC Meesters Y Bouhuys AL Beersma DG van den Hoofdakker RH den Boer JA 《Journal of affective disorders》2004,80(2-3):209-219
Background: The Seasonal Pattern Assessment Questionnaire (SPAQ) is a frequently used screening instrument in the research on Seasonal Affective Disorder (SAD). Nevertheless, studies on its reliability and validity are relatively scarce. In the present study the reliability and the contrast validity of the SPAQ are investigated. Methods: SAD patients, selected by means of a clinical interview, non-seasonal depressed out-patients, non-depressed out-patients, and a control group, are contrasted to estimate the discriminating power of the SPAQ. Also, the reliability and factor structure of the seasonality and the climate subscales are investigated. To study food intake the Seasonal Food Preference Questionnaire (SFPQ) was developed. Results: The SAD criterion of the SPAQ shows good specificity (94%), but a low sensitivity (44%). Discriminant analysis shows sufficient ability to classify subjects (81% correctly classified). The Global Seasonality Scale has a good internal consistency. It consists of two factors, a psychological factor and a food factor. The SFPQ is sensitive for carbohydrate intake by SAD patients. Limitations: Most SAD patients had received treatment and completed the SPAQ while they were not depressed, which may have influenced the sensitivity. Conclusions: The SPAQ is not sensitive enough to be considered a diagnostic instrument for SAD. Nevertheless, it is accurate enough to be used as a screenings instrument. The only false positives were found in the depressive group. The accuracy of prevalence Figs. can be improved by completion of the SPAQ in the summer months, combined with the completion of a depression scale. 相似文献
5.
6.
7.
8.
John P. Rice Theodore Reich Kathleen K. Bucholz Rosalind J. Neuman Roberta Fishman Nanette Rochberg Victor M. Hesselbrock John I. Nurnberger Jr. Marc A. Schuckit Henri Begleiter 《Alcoholism, clinical and experimental research》1995,19(4):1018-1023
Using data from The Collaborative Study on the Genetics of Alcoholism, we compare direct interview diagnoses of alcohol dependence to those obtained by history from family members. Using a requirement of three or more positive implications by history, the specificity, sensitivity, and positive predictive values are 98%, 39%, and 45%, respectively.
A logistic analysis found the gender of the relative and alcoholism in the informant to be significant, but not the gender of the informant. The partial odds ratio of a diagnosis at interview associated with a positive family history diagnosis was 13.6. The relationship between the informant and relative was significant, with negative reports from an offspring or mate more influential than a negative report from a parent or second-degree relative.
We derived a recursive equation to combine a variable number of family history reports, wherein the probabilities associated with a single report are computed from the logistic analysis. This permits the use of family history information both as a proxy for an uninterviewed relative, as well as a second source of information to be used in the analysis of genetic family data. 相似文献
A logistic analysis found the gender of the relative and alcoholism in the informant to be significant, but not the gender of the informant. The partial odds ratio of a diagnosis at interview associated with a positive family history diagnosis was 13.6. The relationship between the informant and relative was significant, with negative reports from an offspring or mate more influential than a negative report from a parent or second-degree relative.
We derived a recursive equation to combine a variable number of family history reports, wherein the probabilities associated with a single report are computed from the logistic analysis. This permits the use of family history information both as a proxy for an uninterviewed relative, as well as a second source of information to be used in the analysis of genetic family data. 相似文献
9.
10.
Bacci Nicholas Houlton Tobias M. R. Briers Nanette Steyn Maryna 《International journal of legal medicine》2021,135(5):1965-1981
International Journal of Legal Medicine - Between the ever-increasing availability of surveillance evidence and expert-based forensic facial comparison being considered admissible in court,... 相似文献