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  • Title: A prospective comparative study of 2540 infants and children with newly diagnosed idiopathic thrombocytopenic purpura (ITP) from the Intercontinental Childhood ITP Study Group.
    Author: Kühne T, Buchanan GR, Zimmerman S, Michaels LA, Kohan R, Berchtold W, Imbach P, Intercontinental Childhood ITP Study Group, Intercontinental Childhood ITP Study Group.
    Journal: J Pediatr; 2003 Nov; 143(5):605-8. PubMed ID: 14615730.
    Abstract:
    OBJECTIVE: To analyze prospectively the impact of age at diagnosis in childhood idiopathic thrombocytopenic purpura (ITP). STUDY DESIGN: International registry from June 1997 to May 2001, with analysis of data from baseline and 6-month-follow-up questionnaires. RESULTS: Data from 2540 patients were analyzed, including 203 infants (7.6%), 1860 children > or =1 to <10 years of age (69.1%), and 477 children and adolescents between > or =10 and <16 years of age (17.7%). The mean platelet count at diagnosis was similar in all three groups, as was the percentage of patients with initial platelet count <20x10(9)/L. The male/female ratio was highest in infants and decreased with age (P=.009). Immunoglobulin therapy was used more often in infants and corticosteroids in patients > or =10 years of age. Follow-up information at 6 months was available for 1742 children (68.6%). Chronic ITP was seen less frequently in infants (23.1%) than in children >10 years of age (47.3%, P<.0001). Intracranial hemorrhage occurred in 3 of 1742 children during the first 6 months after the diagnosis of ITP. CONCLUSIONS: Pediatric patients with ITP from infancy to adolescence exhibit heterogeneity in clinical, demographic, and treatment factors.
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