Additional file 6 of On the impact of relatedness on SNP association analysis

Sample selection of HapMap genotype data. This file provides annotations for 174 HapMap CEU samples. The columns FID (family identifier), IID (individual identifier), dad, mom, sex (1=male, 2=female), pheno (always 0), population (always CEU) correspond to the columns of relationships_w_pops_121708.txt filtered for CEU samples as provided by HapMap. The column ctr contains a unique trio identifier and equals NA when the sample does not belong to a complete trio family. The reason for exclusion is provided where applicable, otherwise NA is stated and the sample is included in our study. (CSV 8 kb)

本文件为HapMap基因型数据的样本筛选说明。本文件针对174份HapMap北欧西欧血统犹他州居民样本（CEU）提供注释信息。各列字段依次为：家系标识符（FID，family identifier）、个体标识符（IID，individual identifier）、父系ID、母系ID、性别（1代表男性，2代表女性）、表型值（恒为0）、人群来源（恒为CEU），上述列对应于HapMap提供的、经CEU样本筛选后的relationships_w_pops_121708.txt文件的列。ctr列包含唯一的三人核心家系标识符，若样本不属于完整的三人核心家系，则该字段值为NA。若存在样本被排除的具体原因，则会予以标注；若无相关说明则标注为NA，且该样本将被纳入本研究。（CSV格式，大小8 KB）