A random sample of Peruvian Indians born in the Andes mountains, but who have since migrated to lower altitudes. The sample was collected to assess the long term effects of altitude on blood pressure.
以随机抽样方式秘鲁的印第安人出生在安第斯山脉的人,但因为迁移到低海拔区域。取的样本海拔高度对血压的术语影响进行评估。
用法----------Usage----------
data(peru.df)
格式----------Format----------
A data frame with 39 observations on 5 variables.
到39对5个变量的数据框。