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4,977 items of data are available, covering 4,924 participants, encoded using Data-Coding 93. Variable-instance indices run from -1 to 1, with related items linked using Instancing 0.
There are 229 values which are outside coding 93
Counts of participants/items last updated 24 Dec 2018.
The data problem indicator was derived by combining participant reports (e.g. non-wear) with measurements of the size of the uncompressed dataset returned by the accelerometer device. This field is only present for accelerometer datasets that have had a problem recorded against them. A value of zero indicates that a dataset reported as unreliable was subsequently examined and found to be acceptable.