【摘要】 介绍了主成分分析原理和方法,应用山西省男、女各220名健康大学生心阻抗血流图11项检测指标,求得反映心搏量,每分输出量及外周阻力三个不同侧面的主成分,以百分位数法确定出三个主成分95%的正常值范围和五个等级的评价标准。全部数据在AST386SX/25计算机实现。更多还原

【Abstract】 Principles and methods of principal-component analysis were introduced in this paper. Three principal components such as stroke volume,cardiac output per minute,and peripheral resistance were obtained by surveying the 11 variables of impedance cardiogram from 220 healthy students in Shanxi province;moreover,the 95% normal value ranges of these components were defined by percentage and their 5-grade evaluation criteria were listed.All data were operated at AST 386 SX/25 computer.更多还原