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Effect of Age and Sex on Stroke Mortality of Young and Middle-aged Adults in China,2002–2019,and Predictions to 2030

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Biomedical and Environmental Sciences 2023年第4期36卷 305-312页

作者： ZHAI Yi SI Xiang WANG wen Zhi zhao wen hua China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijing 100070China Division of Non-communicable Disease and Ageing Health Management Chinese Center for Disease Control and PreventionBeijing 102206China Beijing Neurosurgical Institute Capital Medical UniversityBeijing 100070China National Institute for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China

Objective This study aimed to examine the trends in stroke mortality among young and middle-aged adults in *** Data were obtained from the China national vital registration *** changes in mortality were assessed by Joinpoint ***-period-cohort analysis was used to explain the reasons for the *** mortality and counts were predicted by the Bayesian age-period-cohort *** Between 2002 and 2019,a total of 6,253,951 stroke mortality in young and middle-aged adults were *** age-adjusted mortality rates(AAMRs)of women showed a downward *** annual percent changes(APC)were-3.5%(-5.2%,-1.7%)for urban women and-2.8%(-3.7%,-1.9%)for rural *** contrast,the AAMRs per 100,000 for rural men aged 25–44 years continued to rise from 9.40 to *** AAMRS for urban men aged 25–44 years and urban and rural men aged 45–64years did not change *** 2020 and 2030,the projected stroke deaths are 1,423,584 in men and 401,712 in *** Significant sex and age disparities in the trends of stroke mortality among young and middle-aged adults were identified in *** health policy measures are needed to address the burden of stroke in the young generation,especially for rural men,with a focus on the prevention and management of high risk factors.

关键词： Stroke Mortality Young and middle-aged Joinpoint regression Age-period-cohort analysis

Measurement and Assessment of Physical Activity by Information and Communication Technology

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Biomedical and Environmental Sciences 2017年第6期30卷 465-472页

作者： ZHANG Qun YANG Xi LIU Dan zhao wen hua Chinese Center for Disease Control and Prevention Beijing 102206 China National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention Beijing 100050 China

This study provides explorative insights into the information and communication technology （ICT） for promoting the physical activity level. ICT has provided innovative ideas and perspectives for PA measurement, assessment, evaluation and health intervention. ICT that aims to increase exercise for the entire population should be of a well-oriented and easy-to-use design with the options of tailored and personalized feedback, coaching, and ranking and supporting; it should be capable of setting goals and working with a schedule and be accompanied by a website to provide overviews of the users＇ exercise results and progress.

关键词： Physical activity Measurement Assessment Information and communicationtechnology

EXPERIMENTAL INVESTIGATION OF EFFECTS OF INNER-TANK SLO-SHING ON HYDRODYNAMICS OF AN FLNG SYSTEM

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Journal of Hydrodynamics 2012年第1期24卷 107-115页

作者： zhao wen-hua YANG Jian-min HU Zhi-qiang XIAO Long-fei State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The present research focuses on experimentally clarifying the effect of inner-tank sloshing on the hydrodynamics of an Floating Liquefied Natural Gas（FLNG）*** the comparisons of the results obtained from the model tests carried out with the vessel model ballasted with liquid and solid cargo separately,the effects of the inner-tank sloshing on the hydrodynamics of an FLNG system are highlighted and *** languages of the maximum,minimum,mean values and the standard deviations and power density spectra calculated with the help of the algorithm of Fast Fourier Transformation（FFT）are *** is concluded that the effects of the inner-tank sloshing on the responses of the FLNG system are sensitive to wave excitation frequencies,and that the effects of the inner-tank sloshing play an important role,particularly in the roll motion of the FLNG *** outcome of the proposed technique would offer constructive feedback,which can lead to more practical applications and can serve as a reference for the verification of the potential numerical simulations by other researchers.

关键词： Floating Liquefied Natural Gas(FLNG) hydrodynamics sloshing model tests coupled effects

Recent Trends in Physical Activity among Chinese Children Based on Their Demographic and Social Characteristics

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Biomedical and Environmental Sciences 2021年第5期34卷 404-409页

作者： YANG Xiu LEUNG Alice Waiyi ZHAI Yi zhao wen hua Chinese Center for Disease Control and Prevention Beijing 102206China National Institution for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China Chinese University of Hong Kong Hong Kong 999077China Beijing Tian Tan Hospital Capital Medical UniversityBeijing 100070China

Aimed to explore the trends in physical activity among Chinese children,data of 4,341 children aged6-17 years who participated in at least one round of"China Health and Nutrition Survey"from 2004 to2015 were *** measures mixed models were applied to test the trends in physical activity,which were further analyzed after applying stratification on gender,age,urbanization level,residential area and region.

关键词： ed. applying children

Changes in Waist Circumference and Abdominal Obesity among Chinese Adults over a Ten-year Period

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Biomedical and Environmental Sciences 2017年第5期30卷 315-322页

作者： ZHAI Yi FANG Hong Yun YU wen Tao YU Dong Mei zhao Li Yun LIANG Xiao Feng zhao wen hua Chinese Center for Disease Control and Prevention Beijing 102206 China National Institute for Nutritionand Health Chinese Center for Disease Control and Prevention Beijing 100050 China

Objective The aim of this study was to describe changes in waist circumference（WC） and prevalence of abdominal obesity over a period of 10 years among Chinese adults in different socio-economic status（SES）. Methods Data derived from the China Nutrition and Health Surveillance during 2002 and 2010-2012. We calculated the mean WC and the prevalence of abdominal obesity by gender, place of residence, SES indicators（education, income, and marital status）, and body mass index（BMI） categoriesand used pooled t-tests to assess the differences between the two time periods. Results 26.0% of men and 25.3% of women had abdominal obesity in 2010-2012. The age-adjusted mean WC increased by 2.7 cm among men and 2.1 cm among women; the age-adjusted prevalence of abdominal obesity increased by 7.7% among men and 5.3% among women. The rising trends were observed in all subgroups except for a negative growth in high-income women. People living in rural areas with low education and income and with a BMI of 18.5 to 23.9 kg/m^2 had a greater absolute and relative increase in WC. People living in rural areas with low income had a greater relative increase in abdominal obesity. Conclusion The mean WC and prevalence of abdominal obesity among Chinese adults have increased during the past 10 years. Gender differences were noted using various SES indicators.

关键词： Waist circumference Abdominal obesity Socio-economic indicators Trends China

Hypertension Screening and Follow-up Management by Primary Health Care System among Chinese Population Aged 35 Years and Above

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Biomedical and Environmental Sciences 2015年第5期28卷 330-340页

作者： FENG Ya Jing WANG Hui Cheng LI Yi Chong zhao wen hua National Center for Chronic and Noncommunicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Chinese Center for Disease Control and Prevention National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention

Objective To describe hypertension screening and follow-up management among Chinese population aged 35 years and above within the primary health care system. Methods Data from 2010 China Chronic Disease and Risk Factor Surveillance System were used. We investigated previous hypertension diagnosis, screening, and follow-up assessments within the primary health care system. The prevalence of self-reported and criterion-based hypertension, screening rates, demographic and socioeconomic characteristics associated with screening, and patterns of follow-up assessments were recorded. The SAS software system was used for statistical analyses. Results About 17.1% reported a previous hypertension diagnosis. The rate difference between the two measures of prevalence was 27.2%. Among those without self-reported hypertension, 27.7% reported never visiting a clinic during the past I year and 60.4% of those attending a clinic reported ever being screened. Younger age group was associated with lower screening proportion; odds ratios of 35-, 45-, 55-, and 〉65 years were 1.7 （95% CI： 1.5-1.9）, 1.5 （95% CI： 1.3-1.7）, 1.3 （95% CI： 1.2-1.4）, and 1.0, respectively. About 35.1% of the patients had undergone follow-up assessments four or more times during the past I year. Conclusion Majority of the Chinese population aged 35 years and above, particularly the less educated, elderly population, and rural residents were unaware of that they were suffering from hypertension. Most patients did not receive enough management services by the primary health care system. Thus, strengthening both the screening and follow-up management is needed.

关键词： Hypertension Policy Screening Management

Physical Activity and Sedentary Behaviors among Chinese Children: Recent Trends and Correlates

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Biomedical and Environmental Sciences 2021年第6期34卷 425-438页

作者： YANG Xi LEUNG Alice Waiyi JAGO Russell YU Shi Cheng zhao wen hua Chinese Center for Disease Control and Prevention Beijing 102206China National Institution for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China Chinese University of Hong Kong Hong Kong 999077China Center for Exercise Nutrition and Health SciencesSchool for Policy StudiesUniversity of BristolBristolBS81TZUK

Objective This study was aimed at examining the trends and correlates of physical activity(PA)and sedentary behaviors among Chinese *** A total of 4,341 subjects(6,936 observations)aged 6–17 years who participated in the China Health and Nutrition Survey(2004–2015)were *** the subjects,41%participated in the survey twice or ***-effects ordinal regression models and repeated-measures mixed-effects models were used to examine the PA *** regression models were applied to examine the factors influencing PA and sedentary *** From 2004 to 2015,the prevalence of physical inactivity among Chinese children aged 6–17 years increased by 5.5%[odds ratio(OR),1.51;95%confidence interval(CI),1.19–1.90;P<0.001].The PA volume declined by 5.8 metabolic equivalent of task-hr/week(P<0.001),and the time spent in sedentary behaviors increased by 1.8 hr/week(P<0.001).Age,ethnicity,and region showed significant effects on the PA volume across the quartiles(P<0.001).Across the quartiles,sedentary time was significantly higher in the children residing in urban areas(P<0.001)or areas with high urbanization levels(P≤0.005)than in their *** A declining PA trend among Chinese children aged 6–17 years was observed from 2004 to2015,and certain subgroups and geographical areas are at higher risk of physical inactivity.

关键词： Physical activity Sedentary behaviors Trends Correlates China Children

Challenges Brought about by Rapid Changes in Chinese Diets: Comparison with Developed Countries and Implications for Further Improvement

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Biomedical and Environmental Sciences 2018年第10期31卷 781-786页

作者： zhao Li Yun LIU Dan YU Dong Mei ZHANG Jian WANG Jing Zhong zhao wen hua National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention

Given developments in urbanization, agricultural, and technological practices, the diet and lifestyle of developed countries has changed dramatically over the course of the last century[1].

关键词： Challenges Brought about by Rapid Changes in Chinese Diets Comparison with Developed Countries and Implications for Further Improvement

Fluctuation Phenomenon Analysis of an Arc Plasma Spraying Jet

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Chinese Physics Letters 2001年第8期18卷 1092-1094页

作者： zhao wen-hua TIAN Kuo LIU Di ZHANG Guan-Zhong Department of Engineering Mechanics Tsinghua UniversityBeijing 100084

The effects of three factors,including the power supply,the arc behaviour in the arc channel and the fluid dynamic process of the jet,on a plasma spraying jet have been experimentally detected by means of spectroscopic diagnostic *** fast Fourier transform method has been applied to the analysis on the arc voltage and spectral line intensity of the *** three factors have been studied and distinguished from each other.

关键词： behaviour Plasma spraying