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8,152 items are available, covering 8,152 participants. Units of measurement are records.
There are 4 distinct values.
Mean = 1.2105
Std.dev = 0.452447
10 items above graph maximum of 3
Counts of participants/items last updated 13 Apr 2019.
This field indicates (for each participant) the number of in-patient Health Episode Statistics (HES) records in the UKB repository which contain "Gestation period at first antenatal assessment" information. Participants with zero records are not itemised.
Gestation period at first antenatal assessment is the time from the last menstrual period to the date when the pregnancy was first assessed.
In order to conduct analyses using this information, researchers must include this data-field in their application, however access will be given in-situ rather than as a download.