49,985 items of data are available, covering 49,985 participants, encoded using Data-Coding 100
Quality control steps carried out in Leicester (the location of the UKBiLEVE project) were:
- sex mismatch (remove sample if submitted gender is different to gender inferred from sex chromosomes);
- final call rate (<95%), heterozygosity outliers (outlier if > 3sd from mean heterozygosity);
- unintended duplicate (> 98% of alleles shared identical by descent);
- ancestry principal components outlier (outlier if >10sd from mean on first 10 principal components).
This derived data field has come from Professor Martin Tobin at the University of Leicester.