Transient ischemic attack incidence in joinville, Brazil, 2010: a population-based study.
Fonseca PG., Weiss PAK., Harger R., Moro CHC., Longo AL., Gonçalves ARR., Whiteley WN., Cabral NL.
Background and purposeThere are scarce data on transient ischemic attack incidence in low- and middle-income countries. We aimed to measure transient ischemic attack incidence and the distribution of the ABCD2 risk score in Joinville, Brazil.MethodsIn 2009 to 2010, using a multiple overlapping sources, we ascertained all first ever probable and definite transient ischemic attacks.ResultsWe recorded 74 definite and probable transient ischemic attacks. The crude incidence was 15 (12-18) per 100 000 population. Age adjusted to European population the incidence was 28 (22-35). One fourth was in the higher risk of stroke by the ABCD2 scale.ConclusionsThe transient ischemic attack incidence in Joinville, Brazil, is lower than other well-designed studies. New studies could clarify whether the measured rates were due to underascertainment or reflect a truly low incidence.