Table 5.

Column description of the case event table

Column name	Information
.id	Source of this event
identifier	Unique identifier of the participant
code	Event code
eventdate	Event date
event	Indicate if this episode contains a true event date (event date from linked data or self-report operation=1, self-report event date except for operations =2, not a true event date=0)
epidur	Days hospitalized in this episode documented in secondary care data
classification	Refers to the classification system of the code