Epidemiology of headache in Europe

The present review of epidemiologic studies on migraine and headache in Europe is part of a larger initiative by the European Brain Council to estimate the costs incurred because of brain disorders. Summarizing the data on 1-year prevalence, the proportion of adults in Europe reporting headache was 51%, migraine 14%, and 'chronic headache' (i.e. > or =15 days/month or 'daily') 4%. Generally, migraine, and to a lesser degree headache, are most prevalent during the most productive years of adulthood, from age 20 to 50 years. Several European studies document the negative influence of headache disorders on the quality of life, and health-economic studies indicate that 15% of adults were absent from work during the last year because of headache. Very few studies have been performed in Eastern Europe, and there are also surprisingly little data on tension-type headache from any country. Although the methodology and the quality of the published studies vary considerably, making direct comparisons between different countries difficult, the present review clearly demonstrates that headache disorders are extremely prevalent and have a vast impact on public health. The data collected should be used as arguments to increase resources to headache research and care for headache patients all over the continent.     

快速眼动睡眠剥夺后大鼠脑内神经元骨架蛋白及超微结构的变化

目的探讨经历不同时间快速眼动（REM）睡眠剥夺对大鼠皮质及海马各区神经元形态结构的影响。方法选择微管相关蛋白（MAP2）和神经丝（NF）作为正常神经元结构的标识物，利用免疫组织化学法和Western blot技术观察REM睡眠剥夺1、3、5、7 d4个时间点大鼠皮质及海马MAP2和NF表达的时空变化规律。同时运用电镜技术观察睡眠剥夺后神经元超微结构的变化。我们的实验是用改良的多平台睡眠剥夺模型进行REM睡眠剥夺，结合免疫组织化学染色技术和蛋白质电泳以及电镜超微结构分析。结果REM睡眠剥夺后5d大鼠皮质、海马CA1及齿状回神经元结构蛋白MAP2和NF表达较对照组明显减少（P〈0．05）；电镜神经元核仁偏位，胞质中出现少量肿胀的线粒体和内质网；部分神经轴突的髓鞘溶解与浓集。环境对照组、REM睡眠剥夺5d和7d组，皮质中超微结构改变的神经元所占比例分别为1．2％、3．6％和5．8％。结论REM睡眠剥夺能够导致大鼠脑内神经元的超微结构发生异常变化。     

三级医院病人就诊流向探讨

研究通过对包括专科医院在内的多家三级医院住院病人资料的分析，将疾病种类按ICD－9编码分为19类，研究各类疾病应往低级别医院分流的比例。结果表明：各大类疾病的分流比例不同，分流比例较高的主要是常见病和多发病，总的分流比大约在60％左右。     

深化医学教学改革为社区培养实用型医学人才的实践

为适应医学模式的转变，实现“人人享有卫生保健“的全球战略目标，培养和建设一支满足社区卫生服务急需的实用型医学人才。文章介绍了我院在深化医学教学改革过程中，采用多种综合性措施强化在校临床医学专业本科生的全科医学知识教育，为其将来从事社区卫生服务奠定基础。为满足当前我国社区卫生服务工作对实用型医学人才的急需，对于主要面向基层培养高级医学人才的地方性普通高等医学院校，应对在校学生提前有机地增加和融入社区全科医学知识教育，这有利于强化和巩固医学生的社区卫生服务观念和综合素质。     

The Effect of Health Plan Characteristics on Medicare+Choice Enrollment

Objective. To provide national estimates of the effect of out-of-pocket premiums and benefits on Medicare beneficiaries' choice among managed care health plans.
Data Sources/Study Setting. The data represent the population of all Medicare+Choice (M+C) plans offered to Medicare beneficiaries in the United States in 1999.
Study Design. The dependent variable is the log of the ratio of the market share of the j th health plan to the lowest cost plan in the beneficiary's county of residence. The explanatory variables are measures of premiums and benefits in the j th health plan relative to the premiums and benefits in the lowest cost plan.
Data Collection Methods. The data are from the 1999 Medicare Compare database, and M+C enrollment data from the Centers for Medicare and Medicaid Services (CMS).
Principal Findings. A $10 increase in an M+C plan's out-of-pocket premium, relative to its competitors, is associated with a decrease of four percentage points in the j th plan's market share (i.e., from 25 to 21 percent), holding the premiums of competing plans constant.
Conclusions. Although our price elasticity estimates are low, the market share losses associated with small changes in a health plan's premium, relative to its competitors, may be sufficient to discipline premiums in a competitive market. Bidding behavior by plans in the Medicare Competitive Pricing Demonstration supports this conclusion.     

Physical inactivity, excess adiposity and premature mortality

The purpose of this report is to review the evidence that physical inactivity and excess adiposity are related to an increased risk of all‐cause mortality, and to better identify the independent contributions of each to all‐cause mortality rates. A variance‐based method of meta‐analysis was used to summarize the relationships from available studies. The summary relative risk of all‐cause mortality for physical activity from the 55 analyses (31 studies) that included an index of adiposity as a covariate was 0.80 [95% confidence interval (CI) 0.78–0.82], whereas it was 0.82 [95% CI 0.80–0.84] for the 44 analyses (26 studies) that did not include an index of adiposity. Thus, physically active individuals have a lower risk of mortality by comparison to physically inactive peers, independent of level of adiposity. The summary relative risk of all‐cause mortality for an elevated body mass index (BMI) from the 25 analyses (13 studies) that included physical activity as a covariate was 1.23 [95% CI 1.18–1.29], and it was 1.24 [95% CI 1.21–1.28] for the 81 analyses (36 studies) that did not include physical activity as a covariate. Studies that used a measure of adiposity other than the BMI show similar relationships with mortality, and stratified analyses indicate that both physical inactivity and adiposity are important determinants of mortality risk.     

海岛中学生心理卫生特点及相关因素分析

目的 了解海岛中学生的心理健康状况及其相关因素。方法 随机分层整群抽取海岛城镇2243名中学生，采用自制的一般情况问卷、90项症状清单及艾森克人格问卷进行测试，用SPSS软件包进行统计分析。结果 海岛城镇中学生中的非独生子女比独生子女、高中生比初中生、女生比男生、家庭居住在渔农村比居住在城镇的中学生心理健康水平要低。他们的心理障碍的发生率和SCL-90各项因子分与国内大陆某些地区的报道有所不同，本文中学生的个性特征与SCL-90各项因子分的相关分析表明海岛城镇中学生的心理健康状况与性格的内外倾向、掩饰作用呈负相关，与心理变态倾向、情绪稳定性呈正相关。本文男女生的心理障碍的发生率为16％～47％，以强迫症状为最显著。结论海岛中学生心理障碍的发生率较高，并且与大陆其它地区中学生心理健康状况有所不同。     

Functional Symptoms and Somatoform Disorders in Children and Adolescents: The Role of Standardised Measures in Assessment

Functional or unexplained medical symptoms (physical symptoms that are not adequately explained by organic factors and where a major role for psychological factors is assumed) are common amongst children in the general population but can also be an expression of somatisation and somatoform disorders. Co-morbid psychopathology is common. We describe measures mostly used in research into problems related to somatisation in children and adolescents that may be helpful to clinical researchers. Some address the nature and severity of physical symptoms, others document illness attitudes, beliefs and functional impairment, and a third group assesses emotional symptoms. Questionnaires can be helpful for clinicians in quantifying (i) the nature and severity of somatic symptoms and associated functional impairment, (ii) contributory health attitudes and illness beliefs and (iii) co-morbid or primary anxiety and depressive disorders. Together with pain and activity diaries and careful documentation of school attendance, these measures may also be helpful in monitoring treatment response.     

The morality of efficiency in health care--some uncomfortable implications.

There are some general considerations which have implications for the delivery and finance of health care in all countries, not only Canada and the USA. Beginning with two propositions: that access to health care is a right of citizenship, which should not depend on individual income and wealth; and that the objective of health services is to maximise the impact on the nation's health of the resources available; the paper examines the ethical justification for pursuing efficiency in health care provision. The different meanings of efficiency are discussed in detail, and the use of quantitative indicators of health benefit, such as the QALY, placed in context. It is argued that the determination of health care resource allocations should take account of costs at both the macro planning level and the micro level of the individual doctor-patient relationship. Given the starting points the overall conclusion is that it is ethical to be efficient, since to be inefficient implies failure to achieve the ethical objective of maximising health benefits from available resources.