Matching of the Record Linkage strokes and TIAs.

Matching of Record Linkage events for stroke and TIA with WOSCOPS events. The ‘other’ WOSCOPS events were date matches that were originally recorded as MI in WOSCOPS but were adjudicated by the expert committee as not being an MI, and non-matches had no near date match. A first event was defined as either a stroke or a TIA event and could match with a first or subsequent event of the opposing type.