Multinational Comparisons of Stroke Epidemiology: Evaluation of Case Ascertainment in the WHO MONICA Stroke Study

Published on Mar 1, 1995in Stroke6.058
· DOI :10.1161/01.STR.26.3.355
Kjell Asplund24
Estimated H-index: 24
Ruth Bonita51
Estimated H-index: 51
+ 6 AuthorsJaakko Tuomilehto185
Estimated H-index: 185
Background and Purpose As part of the WHO MONICA Project (World Health Organization Monitoring Trends and Determinants in Cardiovascular Disease), mortality and incidence rates of acute stroke in 14 centers covering 21 populations from 11 countries were compared. Methods In this report, coverage and quality of the MONICA stroke registers were evaluated on five key indicators using data submitted to the MONICA Data Center. Results A low ratio of MONICA stroke register to routine statistics of stroke mortality and a low proportion of nonfatal out-of-hospital events were the most common biases; they indicate that identifications of fatal cases and/or case finding of nonfatal events occurring outside the hospital were inadequate in many MONICA centers. In 10 populations, the data quality analyses suggested that clarification of possible biases would be needed before these populations can be included in a comparative study. Data from the remaining 11 populations meet the data quality standards for multinationa...
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