Background and aim： Several systematic reviews and meta-analyses published within the past years have examined the associations of Mediterranean-style diets （MedSDs） on cognitive. However, these reviews have not be...Background and aim： Several systematic reviews and meta-analyses published within the past years have examined the associations of Mediterranean-style diets （MedSDs） on cognitive. However, these reviews have not been evaluated for satisfying Contemporary methodologies quality standards. At the same time, due to the high demand for related care during the aging process in China, it is necessary to summarize the ex-isting system evaluation and evaluate the quality of it, so as to provide strong evidence for the development of relevant work and to standardize the research process and methods in this field. This study evaluated the quality of recent systematic reviews and meta-analyses on MedSD and cognitive outcomes by using an established methodology quality scale, and to provide some valuable references for future research and Chinese systematic review and meta-analysis developing. Methods： We used the AMSTAR Methodology Quality Assessment Scale to evaluate the quality of methodology of the existing meta-analyses and systematic review. Meta analysis and systematic review that meets our criteria must contain the following characteristics： 1） used systematic or meta-analytic procedures to review the lit-erature, and 2） had MedSD interventions independently. Results： Reviews satisfied with 5 to 9 of the AMSTAR MedSD items （mean 7.35, standard deviation： 1.27）, quality is above average with those published in higher-impact journals having a greater quality score. Conclusion： These data suggest that current meta-analyses/systematic reviews evaluating the effect of MedSD on cognitive do not fully meet contemporary methodology quality standards. The methodological quality of the literature needs to be im- proved. As a result, there are more research questions to answer to enhance our understanding of how MedSD affects cognitive. To clarify associations between MedSD and cognitive, future meta-analyses and systematic reviews should not only follow methodology quality standards but also include more statistical modeling results when data allow. And in order to make the conclusions more reliable, we expect higher quality RCTs in the future.展开更多
Objective: Through the application of the physiological indicator of heart rate variability by some equipments, to assess the psychological quality objectively, quickly and accurately instead of subjectively in the cu...Objective: Through the application of the physiological indicator of heart rate variability by some equipments, to assess the psychological quality objectively, quickly and accurately instead of subjectively in the current methods of the assessment. Methods: Apply the new psychological assessment system to collect the signal of heart rate variability which will be converted to waveforms in time-domain and frequency-domain to analyze people's psychological state. Results: According to heart rate variability parameters in the time domain and frequency domain, we can analyze the autonomic nervous system functions objectively and accurately, then assess mental state. Conclusion: Heart rate variability plays an important role in the psychological assessment system, which has broad prospects for the future development.展开更多
Based on comprehensive analysis of the impact of population aging to social and economic development,a comprehensive evaluation system including 18 indexes was constructed for evaluating regional pressure of populatio...Based on comprehensive analysis of the impact of population aging to social and economic development,a comprehensive evaluation system including 18 indexes was constructed for evaluating regional pressure of population aging on social and economic development.Using statistics data of 31 regions in China from 2004 to 2008,the pressure of population aging on social and economic development,was comprehensively evaluated by using the factor analysis method.The spatial distribution of population aging in China was also analyzed.This study is to provide scientific basis for government to make strategies of coping with population aging according to regional pressure of population aging on social and economic development in China.展开更多
文摘Background and aim： Several systematic reviews and meta-analyses published within the past years have examined the associations of Mediterranean-style diets （MedSDs） on cognitive. However, these reviews have not been evaluated for satisfying Contemporary methodologies quality standards. At the same time, due to the high demand for related care during the aging process in China, it is necessary to summarize the ex-isting system evaluation and evaluate the quality of it, so as to provide strong evidence for the development of relevant work and to standardize the research process and methods in this field. This study evaluated the quality of recent systematic reviews and meta-analyses on MedSD and cognitive outcomes by using an established methodology quality scale, and to provide some valuable references for future research and Chinese systematic review and meta-analysis developing. Methods： We used the AMSTAR Methodology Quality Assessment Scale to evaluate the quality of methodology of the existing meta-analyses and systematic review. Meta analysis and systematic review that meets our criteria must contain the following characteristics： 1） used systematic or meta-analytic procedures to review the lit-erature, and 2） had MedSD interventions independently. Results： Reviews satisfied with 5 to 9 of the AMSTAR MedSD items （mean 7.35, standard deviation： 1.27）, quality is above average with those published in higher-impact journals having a greater quality score. Conclusion： These data suggest that current meta-analyses/systematic reviews evaluating the effect of MedSD on cognitive do not fully meet contemporary methodology quality standards. The methodological quality of the literature needs to be im- proved. As a result, there are more research questions to answer to enhance our understanding of how MedSD affects cognitive. To clarify associations between MedSD and cognitive, future meta-analyses and systematic reviews should not only follow methodology quality standards but also include more statistical modeling results when data allow. And in order to make the conclusions more reliable, we expect higher quality RCTs in the future.
文摘Objective: Through the application of the physiological indicator of heart rate variability by some equipments, to assess the psychological quality objectively, quickly and accurately instead of subjectively in the current methods of the assessment. Methods: Apply the new psychological assessment system to collect the signal of heart rate variability which will be converted to waveforms in time-domain and frequency-domain to analyze people's psychological state. Results: According to heart rate variability parameters in the time domain and frequency domain, we can analyze the autonomic nervous system functions objectively and accurately, then assess mental state. Conclusion: Heart rate variability plays an important role in the psychological assessment system, which has broad prospects for the future development.
基金supported by a grant from the Major Programs of Fundamental Special Work of National Science and Technology (Grand No.2007FY110300),which comes from Ministryof Science and Technology of the People’s Republic of China
文摘Based on comprehensive analysis of the impact of population aging to social and economic development,a comprehensive evaluation system including 18 indexes was constructed for evaluating regional pressure of population aging on social and economic development.Using statistics data of 31 regions in China from 2004 to 2008,the pressure of population aging on social and economic development,was comprehensively evaluated by using the factor analysis method.The spatial distribution of population aging in China was also analyzed.This study is to provide scientific basis for government to make strategies of coping with population aging according to regional pressure of population aging on social and economic development in China.
