全文获取类型
收费全文 | 2460篇 |
免费 | 417篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 96篇 |
妇产科学 | 25篇 |
基础医学 | 143篇 |
口腔科学 | 13篇 |
临床医学 | 88篇 |
内科学 | 553篇 |
皮肤病学 | 5篇 |
神经病学 | 587篇 |
特种医学 | 9篇 |
外科学 | 35篇 |
综合类 | 36篇 |
预防医学 | 1216篇 |
药学 | 46篇 |
中国医学 | 24篇 |
肿瘤学 | 4篇 |
出版年
2023年 | 73篇 |
2022年 | 27篇 |
2021年 | 144篇 |
2020年 | 142篇 |
2019年 | 166篇 |
2018年 | 79篇 |
2017年 | 137篇 |
2016年 | 129篇 |
2015年 | 114篇 |
2014年 | 139篇 |
2013年 | 185篇 |
2012年 | 152篇 |
2011年 | 147篇 |
2010年 | 117篇 |
2009年 | 113篇 |
2008年 | 122篇 |
2007年 | 119篇 |
2006年 | 111篇 |
2005年 | 103篇 |
2004年 | 88篇 |
2003年 | 88篇 |
2002年 | 69篇 |
2001年 | 61篇 |
2000年 | 20篇 |
1999年 | 24篇 |
1998年 | 13篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 8篇 |
1994年 | 13篇 |
1993年 | 8篇 |
1992年 | 23篇 |
1991年 | 17篇 |
1990年 | 16篇 |
1989年 | 7篇 |
1988年 | 12篇 |
1987年 | 9篇 |
1986年 | 5篇 |
1985年 | 11篇 |
1984年 | 5篇 |
1983年 | 3篇 |
1982年 | 8篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1975年 | 3篇 |
1972年 | 2篇 |
1971年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有2883条查询结果,搜索用时 15 毫秒
1.
2.
3.
《L'Encéphale》2022,48(1):13-19
ObjectivesOrthorexia Nervosa (ON) is characterized by a pathological obsession with healthy eating, and dietetic majors may have a potential risk of developing ON due to their occupation that necessitates consideration of optimal food choices. This study aimed to determine the prevalence of ON among a large sample of dietitians and dietetic students in Turkey and to investigate the association of ON with socio-demographic features and eating attitudes within the whole sample.MethodsParticipants (n = 1429) completed a self-administered online survey that featured socio-demographic characteristics, the Orthorexia Nervosa Questionnaire (ORTO-11), and the Eating Attitudes Test-26 (EAT-26). Scores on the ORTO-11 and EAT-26 determined the prevalence of ON and disordered eating behaviors, respectively.ResultsThe prevalence of ON among Turkish dietetic majors was 59.8% with a higher ratio in dietetic students (63.8%) than dietitians (52.9%) (P < 0.001). While graduation was associated with 33.1% lower odds of ON (P = 0.006), eating disorders could increase the ON risk approximately five times (P < 0.001). Furthermore, the greater total and subscale (dieting, bulimia, and oral control) scores of EAT-26 were associated with higher ON tendency (P < 0.001), even after adjustment for potential confounders.ConclusionsOur findings may shed light on the relevance of developing strategies to reduce the prevalence of ON in the dietetic population but need to be supported by further longitudinal and prospective studies. 相似文献
4.
Kimberly B. Glazer Kendrin R. Sonneville Nadia Micali Sonja A. Swanson Ross Crosby Nicholas J. Horton Kamryn T. Eddy Alison E. Field 《The Journal of adolescent health》2019,64(2):165-171
Purpose
To quantify eating disorder (ED) stability and diagnostic transition among a community-based sample of adolescents and young adult females in the United States.Methods
Using 11 prospective assessments from 9,031 U.S. females ages 9–15 years at baseline of the Growing Up Today Study, we classified cases of the following EDs involving bingeing and purging: bulimia nervosa (BN), binge ED, purging disorder (PD), and subthreshold variants defined by less frequent (monthly vs. weekly) bingeing and purging behaviors. We measured number of years symptomatic and probability of maintaining symptoms, crossing to another diagnosis, or resolving symptoms across consecutive surveys.Results
Study lifetime disorder prevalence was 2.1% for BN and roughly 6% each for binge ED and PD. Most cases reported symptoms during only one survey year. Twenty-six percent of cases crossed between diagnoses during follow-up. Among participants meeting full threshold diagnostic criteria, transition from BN was most prevalent, crossing most frequently from BN to PD (12.9% of BN cases). Within each disorder phenotype, 20%–40% of cases moved between subthreshold and full threshold criteria across consecutive surveys.Conclusions
Diagnostic crossover is not rare among adolescent and young adult females with an ED. Transition patterns from BN to PD add support for considering these classifications in the same diagnostic category of disorders that involve purging. The prevalence of crossover between monthly and weekly symptom frequency suggests that a continuum or staging approach may increase utility of ED classification for prognostic and therapeutic intervention. 相似文献5.
6.
7.
Jessica Mumford Michael Kohn Julie Briody Jane Miskovic-Wheatley Sloane Madden Simon Clarke Andrew Biggin Aaron Schindeler Craig Munns 《The Journal of adolescent health》2019,64(3):305-310
Purpose
Anorexia nervosa (AN) is a chronic and life-threatening eating disorder that can have a considerable negative impact on the growing skeleton. We hypothesized that the long-term impact on bone health may persist even after normalization of body weight.Methods
41 females (mean age 21.2 ± 2.9 years) with a history of adolescent-onset AN attended a follow-up bone health assessment at 5 years (T5, n?=?28) or 10 years (T10, n?=?13) after their first AN-related hospital admission. Assessment included dual-energy x-ray absorptiometry measurements of the total body, lumbar spine, and proximal femur, peripheral quantitative computed tomography at the radius and tibia, anthropometric measurements, serum biochemistry, fracture history, and a patient questionnaire.Results
A recovery in body weight and BMI was seen for both the T5 and T10 cohorts (BMI at intake 16.6, BMI at T5-T10 21.2-21.3). Dual-energy x-ray absorptiometry body composition indicated a recovery of fat mass and lean tissue mass. Total BMD was unaffected, but reductions were seen at the femoral neck and arms. Peripheral quantitative computed tomography showed reduced trabecular and cortical bone in the radius, and cortical thinning in the tibia. AN patients showed a statistically significant reduction in measures of radiographic bone health at follow up, although not to a degree that necessitated clinical intervention. Serum insulin-like growth factor 1 was also positively correlated with total BMD and BMC measures. While fracture risk was not increased, a subset of participants (8%) showed multiple (>4) fractures.Conclusion
A longitudinal study of adolescent AN showed persisting negative effects on bone health. 相似文献8.
Mae Lynn Reyes-Rodríguez Hunna J. Watson Concepción Barrio Donald H. Baucom Yormeri Silva Kiara L. Luna-Reyes 《Eating disorders》2019,27(2):205-229
ABSTRACTLatinos are less likely to seek health care for eating disorders and more likely to drop out of treatment than members of other ethnic groups, highlighting existing challenges to engagement in traditional mental health care. This study explored the role of family in the treatment of adult Latinas with eating disorders through content analysis of family sessions adjunctive to cognitive behavioral therapy. This study yielded insight into the experiences of 10 Latinas with eating disorders (M age = 39.90 years) and 10 relatives (M age = 39.50) from the Promoviendo una Alimentación Saludable trial who were randomly selected to receive six family enhancement sessions. Data from 53 sessions were analyzed using a qualitative content analysis approach. Family intervention might serve as a valuable adjunct to conventional treatment by positively influencing social, family, and emotional support for Latinas with eating disorders. 相似文献
9.