A prospective, population-based registration of children with immune thrombocytopenic purpura (ITP) was performed in Norway in 1996 and 1997. Ninety-two cases were identified, indicating an incidence of 5.3 per 100,000 children under 15 years. The sex ratio (female/male) was 1.2/1. Fifty-six percent presented with cutaneous signs only. The lowest platelet count was
Department of Clinical Biochemistry, Centre of Cardiovascular Research, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark Department of Paediatrics, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark Department of Clinical Epidemiology, Aarhus University Hospital, Aalborg and Aarhus, Denmark.
Aim: To assess the incidence rates (IR), clinical characteristics, risk factors, treatment and outcomes of paediatric arterial ischaemic stroke (AIS) and cerebral sinovenous thrombosis (CSVT). Methods: Using population-based, nationwide medical registries, we identified all patients aged 0-18 years at the time of hospitalization with first-ever AIS and/or CSVT in Denmark between 1994 and 2006. Medical records were retrieved and reviewed. Results: We identified 211 patients with AIS and 40 patients with CSVT corresponding to IRs of 1.33 (95% CI 1.16-1.52) and 0.25 (95% CI 0.19-0.34) per 100 000 person-years, respectively. The IRs peaked in infancy (