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   182篇
  免费   4篇
  国内免费   1篇
耳鼻咽喉   1篇
儿科学   2篇
妇产科学   4篇
基础医学   11篇
口腔科学   10篇
临床医学   29篇
内科学   19篇
皮肤病学   4篇
神经病学   11篇
特种医学   5篇
外科学   7篇
综合类   5篇
预防医学   65篇
眼科学   2篇
药学   6篇
中国医学   1篇
肿瘤学   5篇
  2024年   1篇
  2023年   6篇
  2022年   8篇
  2021年   17篇
  2020年   12篇
  2019年   8篇
  2018年   7篇
  2017年   5篇
  2016年   2篇
  2015年   5篇
  2014年   7篇
  2013年   23篇
  2012年   4篇
  2011年   8篇
  2010年   2篇
  2009年   9篇
  2008年   11篇
  2007年   4篇
  2006年   9篇
  2005年   4篇
  2004年   5篇
  2003年   9篇
  2002年   2篇
  2001年   2篇
  2000年   3篇
  1999年   1篇
  1998年   3篇
  1997年   1篇
  1996年   4篇
  1995年   1篇
  1994年   1篇
  1991年   1篇
  1990年   1篇
  1980年   1篇
排序方式: 共有187条查询结果,搜索用时 15 毫秒
1.
Fast self-reported eating rate (SRER) has been associated with increased adiposity in children and adults. No studies have been conducted among high-school students, and SRER has not been validated vs. objective eating rate (OBER) in such populations. The objectives were to investigate (among high-school student populations) the association between OBER and BMI z-scores (BMIz), the validity of SRER vs. OBER, and potential differences in BMIz between SRER categories. Three studies were conducted. Study 1 included 116 Swedish students (mean ± SD age: 16.5 ± 0.8, 59% females) who were eating school lunch. Food intake and meal duration were objectively recorded, and OBER was calculated. Additionally, students provided SRER. Study 2 included students (n = 50, mean ± SD age: 16.7 ± 0.6, 58% females) from Study 1 who ate another objectively recorded school lunch. Study 3 included 1832 high-school students (mean ± SD age: 15.8 ± 0.9, 51% females) from Sweden (n = 748) and Greece (n = 1084) who provided SRER. In Study 1, students with BMIz ≥ 0 had faster OBER vs. students with BMIz < 0 (mean difference: +7.7 g/min or +27%, p = 0.012), while students with fast SRER had higher OBER vs. students with slow SRER (mean difference: +13.7 g/min or +56%, p = 0.001). However, there was “minimal” agreement between SRER and OBER categories (κ = 0.31, p < 0.001). In Study 2, OBER during lunch 1 had a “large” correlation with OBER during lunch 2 (r = 0.75, p < 0.001). In Study 3, fast SRER students had higher BMIz vs. slow SRER students (mean difference: 0.37, p < 0.001). Similar observations were found among both Swedish and Greek students. For the first time in high-school students, we confirm the association between fast eating and increased adiposity. Our validation analysis suggests that SRER could be used as a proxy for OBER in studies with large sample sizes on a group level. With smaller samples, OBER should be used instead. To assess eating rate on an individual level, OBER can be used while SRER should be avoided.  相似文献   
2.
Most studies concerning the nutritional status of alcoholics have focused on the indigent alcoholic but programs now increasingly consider the working patient. The role of socioeconomic status in determining nutritional status of the alcoholic is further clarified in this study. One hundred patients from an alcoholic population were studied, 50 with low socioeconomic status and 50 with middle or higher socioeconomic status. The nutritional status of these two different socioeconomic groups was examined and compared. The middle-income alcoholic had significantly higher values in weight to height index (P less than .02), the triceps skinfold (P less than .01), the midarm muscle circumference (P less than .05), hematocrit (P less than .01), and epilation force (P less than .001) than the lower-income alcoholic group. Hair-pulling tension was compared in both groups as an index of protein malnutrition. There was a highly significant difference in the two groups.  相似文献   
3.
Abstract

Life balance seems subjective, health related, and multidimensional. However, the concept is complex. Exploring what people themselves consider more or less important for their life balance and whether this differs between people would develop new knowledge. Q methodology was chosen for the present study, in which 32 working men and women without recent long-term sick leave participated. They sorted 42 statements regarding life balance according to their importance for each participant's life balance. The analysis resulted in four different viewpoints concerning life balance. All four viewpoints considered good relationships with those closest to them, as well as knowing that these people were doing well, as important. Each viewpoint also showed a unique orientation towards what was considered important for life balance: occupational balance (viewpoint 1), self-actualization (viewpoint 2), self-awareness (viewpoint 3), and reciprocal relationships (viewpoint 4). The results. showed support for life balance as being a subjective, multidimensional, and health-related phenomenon. The results demonstrated the importance of relationships for life balance and heterogeneity in what people considered important for their own life balance.  相似文献   
4.
Sound exposure data are central for any intervention study. In the case of utilitarian mobility, where studies cannot be conducted in controlled environments, exposure data are commonly self-reported. For short-term intervention studies, wearable devices with location sensors are increasingly employed. We aimed to combine self-reported and technically sensed mobility data, in order to provide more accurate and reliable exposure data for GISMO, a long-term intervention study. Through spatio-temporal data matching procedures, we are able to determine the amount of mobility for all modes at the best possible accuracy level. Self-reported data deviate ±10% from the corrected reference. Derived modal split statistics prove high compliance to the respective recommendations for the control group (CG) and the two intervention groups (IG-PT, IG-C). About 73.7% of total mileage was travelled by car in CG. This share was 10.3% (IG-PT) and 9.7% (IG-C), respectively, in the intervention groups. Commuting distances were comparable in CG and IG, but annual mean travel times differ between  = 8,458 min (σ = 6,427 min) for IG-PT,  = 8,444 min (σ = 5,961 min) for IG-C, and  = 5,223 min (σ = 5,463 min) for CG. Seasonal variabilities of modal split statistics were observable. However, in IG-PT and IG-C no shift toward the car occurred during winter months. Although no perfect single-method solution for acquiring exposure data in mobility-related, naturalistic intervention studies exists, we achieved substantially improved results by combining two data sources, based on spatio-temporal matching procedures.  相似文献   
5.
ObjectiveTo analyze the contents and formats of general self-reported questionnaires on disability that are designed for and/or are widely applied in the elderly population to depict a complete picture of this field and help researchers to choose proper tools more efficiently.MethodsA broad systematic literature search was performed in September 2013 and included the following databases: MEDLINE, EMBASE, CINAHL, PsycINFO, and PROQOLID. The publication language was limited to English and Chinese. Two review authors independently performed the study selection and data extraction. All of the included instruments were extracted and classified using the International Classification of Functioning, Disability, and Health framework.ResultsOf 5569 articles retrieved from the searches and 156 articles retrieved from the pearling, 22 studies (including 24 questionnaires) fulfilled the inclusion criteria. From these, 42 different domains and 458 items were extracted. The most frequently used questionnaire was the Barthel Index followed by the Lawton and Brody Instrumental Activities of Daily Living Scale and the Katz Index of Activities of Daily Living, respectively. The contents and formats of the questionnaires varied considerably. Activities and participation were the most commonly assessed dimensions. In addition, the Activities of Daily Living, mobility and the Instrumental Activities of Daily Living Scale were the most common domains assessed among the included questionnaires.ConclusionsAmong the 24 included questionnaires, the most frequently used questionnaires were the Barthel Index, Lawton and Brody Instrumental Activities of Daily Living Scale, and Katz Index of Activities of Daily Living. The content and format of the questionnaires varied considerably, but none of the questionnaires covered all essential dimensions of the International Classification of Functioning, Disability, and Health framework.  相似文献   
6.
7.
目的:了解综合心理健康教育对劳动密集型企业产业工人抑郁早期识别的干预效果,以便在更多的劳动密集型企业推广,提高工人抑郁早期识别能力及总体心理健康水平.方法:选取深圳有代表性的某劳动密集型企业的A、B两个厂区分别作为综合心理健康教育干预产区和非干预产区,然后利用抽签法从A厂区的9个车间中抽取1个车间作为综合心理健康教育干预组(简称干预组),从B厂区的9个车间中抽取1个车间作为非干预对照组.干预组接受为期6个月,每月至少1项干预措施的综合心理健康教育,对照组按照常规管理.用自编的心理健康教育需求状况调查表、贝克抑郁量表(BDI)和定性访谈评价干预效果.干预前后共脱落653人,故采用符合方案(PP集)和意向性分析(ITT集)比较干预效果.结果:PP集中,干预组干预后的抑郁早期识别关键信息知晓率高于干预前(83.5% vs.50.5%,P<0.01),对照组干预前后差异无统计学意义(32.8% vs.42.6%,P>0.05);两组的自报抑郁情绪阳性率干预前后差异均无统计学意义(干预组21.8% vs.13.8%,P>0.05;对照组31.9% vs.16.7%,P>0.05).ITT集中,两组的抑郁早期识别关键知识知晓率干预前后差异均无统计学意义(干预组:46.8%vs.50.6%,P>0.05;对照组:49.1% vs.47.1%,P>0.05);两组的自报抑郁情绪阳性率干预前后均无统计学意义(干预组:25.4% vs.22.4%,P>0.05;对照组:33.6% vs.29.8%,P>0.05).定性访谈显示,综合心理健康教育可能提高工人的总体心理健康水平.结论:本研究表明,综合心理健康教育能有效提高劳动密集型企业产业工人对抑郁早期识别关键信息的知晓率及总体心理健康水平.  相似文献   
8.
ObjectiveTo assess the utility of self-reported symptoms in identifying positive coronavirus disease 2019 (COVID-19) cases among predominantly healthy young adults in a military setting.MethodsA questionnaire regarding COVID-19 symptoms and exposure history was administered to all individuals contacting the Israeli Defence Forces Corona call-centre, before PCR testing. Surveyed symptoms included cough, fever, sore throat, rhinorrhoea, loss of taste or smell, chest pain and gastrointestinal symptoms. Factors were compared between positive and negative cases based on confirmatory test results, and positive likelihood ratios (LR) were calculated. Results were stratified by sex, body mass index, previous medical history and dates of questioning, and a multivariable analysis for association with positive test was conducted.ResultsOf 24 362 respondents, 59.1% were men with a median age of 20.5 years (interquartile range 19.6–22.4 years). Significant positive LRs were associated with loss of taste or smell (LR 3.38, 95% CI 3.01–3.79), suspected exposure (LR 1.33, 95% CI 1.28–1.39) and fever (LR 1.26, 95% CI 1.17–1.36). Those factors were also associated with positive PCR result in a multivariable analysis (OR 3.51, 95% CI 3.04–4.06; OR 1.86, 95% CI 1.65–2.09; and OR 1.34, 95% CI 1.19–1.51, respectively). Reports of loss of taste or smell increased gradually over time and were significantly more frequent during the late period of the study (63/5231, 1.21%; 156/7941, 1.96%; and 1505/11 190, 13.45%: p < 0.001).ConclusionLoss of taste or smell, report of a suspicious exposure and fever (>37.5°C) were consistently associated with positive LRs for a positive SARS-CoV-2 PCR test result, in a population of predominantly young and healthy adults.  相似文献   
9.
Range of motion (ROM) is an important component of the assessment of total knee arthroplasty (TKA) outcome. We compared patient-reported versus clinically observed ROM in a prospective cohort. Clinically observed ROM was measured using a goniometer by a trained research assistant. Self-reported ROM was estimated using a set of lateral knee photographs depicting varying levels of flexion and extension. All measures were taken pre-operatively, three, and six months postoperatively. We found statistically significant associations between self-reported ROM and clinically observed ROM for flexion and extension (all P < 0.001). We dichotomized flexion at 90° and found that self-report had a specificity of 94% and sensitivity of 65%. We conclude that patient-reported ROM may be a useful outcome measure for TKA.  相似文献   
10.
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