Data
487,921 items of data are available, covering 487,921 participants, encoded using Data-Coding
22000.
Notes
Genotyping was done using two closely related arrays, referred to as the UK BiLEVE array and the UK Biobank Axiom array. The BiLEVE array was designed first and run on ~50,000 participants. The UKB Axiom array was designed subsequently with a view to maximizing marker overlap as much as possible between the arrays and run on the remaining ~450,000 participants. The UKB Axiom array had over 820,000 SNPs and indel markers, and the UK BiLEVE array was very similar with over 95% common content.
Samples were analysed in batches of approximately 4700 items. Interim results from first 33 batches (UKBiLEVE_b1-11 and Batch_b001-022) were released 18 months ahead of the remainder. The CEL files from these interim batches were subsequently re-analysed as part of the QC process for the full release, and this resulted in minor changes to the associated calls.