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EPI法接种率调查的由来与统计学简要原理
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作者 潘宝骏 《中国公共卫生学报》 1984年第2期43-44,共2页
扩大免疫规划(EPI)目前正在全世界贯彻执行,我国也已在几个试点省中开展。EPI 用于评价接种率的'整群抽样法'(EPI 法),文献中原叫'分层两步整群抽样法'(stratified two-stage cluster sampling),后统称'整群抽样法&... 扩大免疫规划(EPI)目前正在全世界贯彻执行,我国也已在几个试点省中开展。EPI 用于评价接种率的'整群抽样法'(EPI 法),文献中原叫'分层两步整群抽样法'(stratified two-stage cluster sampling),后统称'整群抽样法'(cluster sampling)。 展开更多
关键词 接种率调查 epi法 扩大免疫规划 整群抽样 容量比例 统计学原理 接种情况 样本率 免疫水平 样本含量
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Andropause and the development of cardiovascular disease presentationmore than an epi-phenomenon 被引量:1
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作者 Emst R. Schwarz Anita Phan Robert D. Willix Jr 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2011年第1期35-43,共9页
Andropause refers to a generalized decline of male hormones, including testosterone and dehydroepiandrosterone in middle-aged and aging men. This decline in hormones has been associated with changes such as depression... Andropause refers to a generalized decline of male hormones, including testosterone and dehydroepiandrosterone in middle-aged and aging men. This decline in hormones has been associated with changes such as depression, loss of libido, sexual dysfunction, and changes in body composition. Aging has been associated with an abundance of concomitant diseases, in particular cardiovascular diseases, and although andropause is correlated to aging, a causal relationship between reduction of androgens and the development of chronic diseases such as atherosclerosis and heart failure has not been convincingly established yet. On the other hand, increasing data has emerged that revealed the effects of low levels of androgens on cardiovascular disease progression. As an example, low levels of testosterone have been linked to a higher incidence of coronary artery disease. Whether hormone replacement therapy that is used for andropausal men to alleviate symptoms of "male menopause" can halt progression of cardiovascular disease, remains controversially discussed, primarily due to the lack of well-designed, randomized controlled trials. At least for symptom improvement, the use of androgen replacement therapy in andropausal men may be clinically indicated, and with the appropriate supervision and follow up may prove to be beneficial with regard to preservation of the integrity of cardiovascular health at higher ages. 展开更多
关键词 ANDROPAUSE age ANDROGEN TESTOSTERONE heart disease heart failure hormone therapy
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