The effectiveness of regional health information platform was judged by overall assessment of its data contents, data quality, data safety and beneficial results in order to promote the mutual link and mutual communi-cation between the platforms and data centers at the provincial, municipal and county levels, speed up the data sharing and professional work cooperation, and meet the different information needs of different users.

Objective Networked health information on diabetes updated by some websites was evaluated to provide evidence for its improvement.Methods Twenty-four domestic diabetes-related websites were identified,and primary index (media index,health information index and diabetes information index) and secondary index (practicability index and novelty index) were evaluated by using hierarchal analysis method.Results Of three primary index,compared with media and health information index,diabetes information index showed higher scores.Moreover,health information and diabetes information had strong causality.For the secondary index,practicability and novelty got relatively lower scores.The website Diabetic Club and Health for All got the highest (3.2) and the slowest scores (1.7),respectively.Conclusion At present,domestic diabetes-related websites may be far from satisfaction and need improvement in technology and human resources and more inputs.

Through the retrieval of literatures about the research and application of ontology in the diabetes field in PubMed,IEEE/ IET Electronic Library,ACM,WANFANG,CNKI,VIP and other Chinese and English databases,as well as the search engines Google Scholar and Baidu Scholar,the paper shows the current situations and summarizes the main study contents.The result shows that the study achievements of ontology in the field of diabetes increase rapidly and there are obvious advantages in semantic comprehension in recent decade.

The paper analyzes the documents related to the foreign medical automatic Question Answering (QA) system,and compares the differences between automatic QA and traditional network information retrieval,describes the automatic QA system in the aspects of application researches,common tools and relevant technologies.Combining foreign related researches,it also discusses the current key problems of medical automatic QA system and the implications for China in order to offer reference for further research.

Taking the diet problem of diabetic patients as an example,the paper puts forward the problems classification system based on functions in the view of users,classifies the problems put forward by patients through the Support Vector Machine (SVM) algorithm,and provides important support for the construction of the deep automatic Question Answering (QA) system.

Mild cognitive impairment is a transitional state between normal aging and dementia, which is the best intervention window to delay cognitive decline.As one of the adjustable risk factors affecting cognitive function, perceived stress significantly increases the risk of cognitive impairment by causing hypothalamic-pituitary-adrenal axis dysfunction and psychological disorders.Therefore, perceived stress management will become a new hot spot in the research and practice of non-drug intervention techniques for cognitive impairment.This paper reviews the current situation of perceived stress in MCI population, the relationship between perceived stress and cognitive function, and the evaluation techniques of MCI individual perceived stress.Further more, this paper summarizes the relevant influencing factors of perceived stress based on stress attribution model, and comments on the action mechanism and practical enlightenment of perceived stress intervention program on cognitive function management, in order to provide theoretical reference for cognitive function management of MCI population.

Objective To investigate the diagnosis and surgical treatment of intracaval venous tumors. Methods Clinical data of 6 cases were retrospectively analyzed, including signs and symptoms diagnostic means such as type-B ultrasound, CTA, MRA, surgical procedures and prognosis. Results All six cases received type-B ultrasonic examination, final definite diagnosis was achieved by CTA exam in 2 cases and through MRA in 4 cases. Heart involvement was found in 3 cases. All patients underwent a surgery. According to the extent of the tumor,3 cases had thoraco-abdominal incision,3 cases with extracorporeal circulation and right atrium opening. All of the tumors were completely resected. Pathological exam revealed that 4 cases were of leiomyomatosis and 2 cases were of leiomyosarcoma. One case with leiomyosarcoma died of liver disfunction postoperatively.The other 5 cases recovered without major complications. An average 51 months of follow-up found no recurrence. Conclusions CT and MRI are the mainstay for the diagnosis,and MRI can provide clear anatomy image to the surgeons, help choose the surgical procedures. The one-stage operation is effective. During the operation, the main branches of the vena cava system should be detected, and the attachment of the tumor should be found and removed thoroughly to prevent the recurrence of the tumor. When the attachment point is lower than the iliac vein level, ligation of the involved iliac vein should be mandatory.

The paper introduces the common methods for automatic de-identification of clinical texts,including the method based on rules,machine learning method,comprehensive method,etc.,states the challenges for clinical texts practicability,system universality and scalability of clinical texts de-identification research,analyzes the further research direction,and provides reference for researchers of this field.

The general characteristics, outcomes and risk factors of the patients with aortic dissection (AD) were evaluated in a single medical center. From January 2002 to December 2008, 284 patients with AD were treated and followed-up at our institution, including 105 cases of type A AD and 179 cases of type B AD. The patients in each type were divided into three groups according to management: medical treatment group (A or B), open surgery group (A or B), and stent-graft group (A or B). The characteristics and follow-up outcomes were compared between the groups or subgroups. The results showed that there was significant difference in the prognosis for type A AD between medical treatment group and open surgery group, but there was no significant difference in the prognosis for type B AD between medical treatment group and stent-graft group. Independent risk factors of follow-up mortality for patients with type A AD included a history of atherosclerosis (HR, 3.807; 95% confidence interval [CI], 1.489 to 7.611; P=0.003), in-hospital hypotension/shock (HR, 4.687; 95% CI, 1.846 to 11.900; P=0.001), in-hospital myocardial ischemia or infarction (HR, 3.734; 95% CI, 1.613 to 8.643; P=0.002), pleural effusion (HR, 2.210; 95% CI, 1.080 to 4.521; P=0.030), branch vessel involvement (HR, 2.747; 95% CI, 1.202 to 6.278; P=0.016) and surgical treatment (HR, 0.177; 95% CI, 0.063 to 0.502; P=0.001). And there were insignificant independent predictors for mortality of the patients with type B AD. It was concluded that there were significant differences in characteristics and one year mortality between type A AD and type B AD, but after one year, there was no significant difference in the mortality and complications of them. There were several discordant risk factors of AD, such as female gender, age, thrombus, abrupt onset of pain that were considered as the risk factors in some papers. And there was no definite risk factor of mortality in this study in the patients with type B AD.

Objective: To understand the changes of smoking behavior among primary and middle school students in Beijing during 2005-2015. Methods: The primary and middle schools in Beijing were classified and then taken as a sampling frame. Twophase stratified random cluster sampling was conducted with school as primary sampling unit (PSU) and class as the minimum sampling unit, respectively. Beijing Schoolbased Smoking Monitoring Questionnaire was surveyed in 2005 and 2005, 2010, 2011, 2013 and 2015 anonymously. Results: In 2015, the smoking rate among primary and middle school students in Beijing was 9.41%. Among them, for primary, junior, high school and vocational high school students, the rates were 7.05%, 7.06%, 12.41% and 34.11%, respectively. The smoking rates were now 3.26%, with 1.99%, 1.80%, 3.48% and 20.22%, respectively, among primary, middle and high school and vocational high school students. male, vocational school students were more likely to report smoking across six waves of surveillance. Results from the surveillance in 2015 showed a decreasing trend in ever smoking rate and current smoking rate compared with previous survey. About half of the current student smokers were reported to take 1 cigarette/day, and about 10% smokers were reported to take 10 cigarettes/day. Students were most likely to smoke at home(24.02%), followed by smoking at schools(12.74%). The percentage of buying cigarettes by themselves was increased from 17.10% in 2008 to 66.09% in 2015. Conclusion From 2005 to 2015, both ever smoking and current smoking rate among middle school students in Beijing decreased in general, however smoking among vocational high school students warrants further attention.