首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2295082篇
  免费   171452篇
  国内免费   3353篇
耳鼻咽喉   32120篇
儿科学   77710篇
妇产科学   63471篇
基础医学   333647篇
口腔科学   63156篇
临床医学   208394篇
内科学   450146篇
皮肤病学   49730篇
神经病学   182194篇
特种医学   88293篇
外国民族医学   898篇
外科学   337768篇
综合类   49117篇
现状与发展   4篇
一般理论   890篇
预防医学   183375篇
眼科学   51794篇
药学   169621篇
  8篇
中国医学   4102篇
肿瘤学   123449篇
  2018年   23973篇
  2017年   18173篇
  2016年   19931篇
  2015年   22832篇
  2014年   31571篇
  2013年   48466篇
  2012年   66356篇
  2011年   70727篇
  2010年   41554篇
  2009年   39849篇
  2008年   67105篇
  2007年   71927篇
  2006年   71779篇
  2005年   70163篇
  2004年   68065篇
  2003年   65521篇
  2002年   64029篇
  2001年   104971篇
  2000年   108148篇
  1999年   91818篇
  1998年   25794篇
  1997年   23265篇
  1996年   23902篇
  1995年   22593篇
  1994年   21258篇
  1993年   19791篇
  1992年   73278篇
  1991年   71895篇
  1990年   69827篇
  1989年   67236篇
  1988年   62166篇
  1987年   61199篇
  1986年   57656篇
  1985年   55041篇
  1984年   41691篇
  1983年   35609篇
  1982年   20983篇
  1981年   19158篇
  1979年   38355篇
  1978年   27589篇
  1977年   23167篇
  1976年   21682篇
  1975年   23313篇
  1974年   27801篇
  1973年   27202篇
  1972年   25401篇
  1971年   23442篇
  1970年   22041篇
  1969年   20518篇
  1968年   18959篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
142.
143.
144.
145.
146.

BACKGROUND

Online physician rating websites are increasingly used by patients to evaluate their doctors. The purpose of this investigation was to evaluate factors associated with better spine surgeon ratings.

METHODS

Orthopedic spine surgeons were randomly selected from the North American Spine Society directory utilizing a random number generator. Surgeon profiles on three physician rating websites, namely, www.HealthGrades.com, www.Vitals.com, and www.RateMDs.com, were analyzed to gather qualitative and quantitative data on patients’ perceptions of the surgeons. Independent variables from the websites were analyzed in relation to overall physician or patient satisfaction rating. Comments were coded by subject into following three categories: professional competence, bedside manner, and practice characteristics.

RESULTS

A total of 250 surgeons were evaluated, and 92% (n=230) of these doctors had at least one rating among the three websites. The surgeons with a higher average rating had significantly better trust (p<.01), scheduling (p<.01), staff (p<.01), helpfulness (p<.01), and punctuality (p<.01) scores but significantly less experience (p<.05). A linear regression model for the average rating of each surgeon (R2 value=0.754) yielded only following three significant variables: trustworthiness (p<.01), experience match (p<.05), and the average number of negative comments on surgeon's professional competence (p<.05). Trustworthiness (β=0.749) was the strongest predictor variable of physician rating, followed by the number of negative professional competence comments (β=?0.132) and experience match (β=?0.112).

CONCLUSIONS

This investigation assessed spine surgeon online patient ratings and categorized factors that patients associate with quality care. Trustworthiness was the most significant predictor of positive ratings, whereas ease of scheduling, quality of staff, helpfulness, and punctuality were also associated with higher patient ratings. Understanding what patients value may help optimize care of spine surgery patients.  相似文献   
147.
The fat mass and obesity-associated gene (FTO) rs9939609 A-allele is linked to obesity and dyslipidemia, yet the independent influence of this polymorphism on blood lipids remains equivocal. We examined the influence of the FTO rs9939609 polymorphism on fasting and postprandial blood lipids in individuals homozygous for the risk A-allele or T-allele with similar anthropometric and demographic characteristics. 12 AA and 12 TT males consumed a standardized meal after fasting overnight. Blood samples were collected at baseline (−1.5 h), before the meal (0 h), and for five hours postprandially to measure lipid, glucose, and insulin concentrations. Time-averaged total area under the curve (TAUC) values (0–5 h) were calculated and compared between genotypes. Fasting triacylglycerol (TG), high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, total cholesterol, non-esterified fatty acid (NEFA), glucose, and insulin concentrations were similar between groups (p ≥ 0.293). TAUC for TG was similar in AAs and TTs (95% confidence interval (CI) −0.52 to 0.31 mmol/L/h; p = 0.606). Likewise, TAUC values were similar for NEFA (95% CI −0.04 to 0.03 mmol/L/h; p = 0.734), glucose (95% CI −0.41 to 0.44 mmol/L/h; p = 0.951), and insulin (95% CI −6.87 to 2.83 pmol/L/h; p = 0.395). Blood lipids are not influenced by the FTO rs9939609 polymorphism, suggesting the FTO-dyslipidemia link is mediated by adiposity and weight management is important in preventing FTO-related lipid variations.  相似文献   
148.
149.
150.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号