Principal Component Analysis on Semen Quality among Chinese Young Men

查看全文 作　　者：Jun-[1]qingWU;Er-[2]shengGAO;Jian-[2]guoTAO;Cui-[2]lingLIANG;[2]WenyingLI;Qiu-[2]yingYANG;Kang-[3]shouYAO;Wei-[4]qunLU;[5]LuCHEN 机构地区：[1]Fudanuniversity,Shanghai,200032,China;[2]ShanghaiInstituteofPlannedParenthoodResearch,Shanghai,200032,China;[3]ZhejiangInstituteofPlannedParenthoodResearch,l-langzhou,310012,China;[4]GuizhouInstituteofPlannedParenthoodResearch,Guiyang,550004,China;[5]QingdaoInstituteofPlannedParenthoodResearch,Qingdao,255071,China 出　　处：《Journal of Reproduction and Contraception》索引2003年第14卷第1期,共9页 摘　　要：Objective To understand the current semen quality status among Chinese young men and influential factors in China and to explore its evaluation index. Methods A total of 562 healthy male volunteers were recruited during their premarital examinations in seven provincials and municipal regions' MCH centers; descriptive and principal component analyses were used to analyze data.Results The findings show that semen volume (2.61±1.10 mL), sperm density (64.47±34.59×106/mL), percentage of sperm forward progression (59.89%±17.11%), percentage of sperm viability (77.19%±11.87%), and percentage of normal sperm morphology (78.23%±9.15%). The first principal component function is Z1=-8.512 54 + 0.001 36X1' +0.031 92X2'+0.043 52X3'+ 0.039 84X4', which is closely related to percentage of sperm viability (X3), percentage of sperm forward progression (X2), and percentage of normal sperm morphology (X4);The second principal component function is: Z2=0.491 92+ 0.080 80X1- 0.000 58X2 - 0.005 10X3 - 0.018 07X4, which depends on the total sperm count (X1). Conclusion Only 42.3% subjects meet all the common WHO standard of semen quality. The multiple analysis of Z1 showed that the highest Z1 are among subjects from Guizhou, workers, or town residents. Multiple analysis of Z2 showed that the older age when the subjects had the first sexual impulse, the longer period of sexual abstinence and more quantity of sperm they had; the more sexual activity subjects had, the less amount of sperm they had. 关 键 词：青年男性 精子质量 成分分析 影响因素 评价指标 精子密度 精子活力