中国汉族人群瓣状甲出现频率的调查研究

Frequencies of the Petaloid Toenails of Chinese Han Nationality Population:An Investigation

瓣状甲是小脚趾甲旁有"小趾甲"的体征性状,常见于中国人的汉族人群中。采用抽样调查的方法探究了全国23个省级行政区汉族人群中瓣状甲的出现率及其性别间差异。研究发现,仅有河南省汉族人群的瓣状甲出现率存在性别差异,安徽等11省级行政区的瓣状甲出现率高于40%,黑龙江省的瓣状甲出现率低于30%,。基于各省汉族人群中瓣状甲出现率的调查结果,提出"中部出现率最高,向四周逐渐降低"的瓣状甲出现率变化趋势。

Petaloid toenail is a physical trait, which is characterized by am additional tiny toenail on the small toe. The frequencies of the petaloid toenails of Chinese Han population among 23 provincial administration regions were investigated and analyzed by using stratified random sampling. Results showed that the sexual difference was only observed in Han ethnic group in He＇nam province. The frequency of petaloid toenail was above 40% in 11 provincial administration regions such as Anhui. The frequency of petaloid toenail was below 30% in Heilongjiang province. The frequency of petaloid toenail was highest in the middle region of China, and reduced gradually towards southeast, southwest, northeast and northwest direction.