: Data-Field 25931

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Data

40,595 items of data are available, covering 39,648 participants.
Defined-instances run from 2 to 3, labelled using Instancing 2.
Array indices run from 0 to 1.

Average compound dataset is 480b, largest is 491b.

2 Instances

Instance 2 : Imaging visit (2014+)
39,626 participants, 39,678 items
Data not meaningful for statistical summary

Instance 3 : First repeat imaging visit (2019+)
917 participants, 917 items
Data not meaningful for statistical summary

Notes

The array index value indicates the version number of the machine learning pipeline used to generate the derived data. Atrial volume calculations required Python libraries to extract segmentation boundaries, approximately evaluating a 3D volume by assuming an ellipsoid object. An upgrade to these libraries introduced some numerical differences in a small subset of participants. Where multiple values were provided, the most recent version of the segmentation has been retained.

Array 0: Data derived in 2020 and published in https://doi.org/10.1038/s41591-020-1009-y.

Array 1: Data derived in 2021 after update of Python libraries.

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