Diagnostic Criteria and Quality Control of the Registration of Stroke Events in the MONICA Project

. Stroke events are being registered in 27 of the MONICA collaborating centres. Coding of test cases has shown the greatest discrepancies in coding of the type of stroke (different pathoanatomical diagnoses) and of the diagnostic category (whether a definite stroke has occurred or not), 23 % and 14 % discrepancies respectively. A check for completeness of stroke registration at the Northern Sweden MONICA Center showed that more than 91 % of the...