Assembly of a Cohort of Children Treated for Acute Myeloid Leukemia at Free-Standing Children's Hospitals in the United States Using an Administrative Database

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Pediatric Health Information System data were used to establish a multi-center cohort of 1,686 children treated for newly diagnosed acute myeloid leukemia (AML). The cohort assembly process, which included myeloid leukemia ICD-9 discharge diagnosis codes and manual review of induction chemotherapy, was validated by chart review at a single institution. The use of ICD-9 codes alone resulted in a poor positive predictive value (PPV; 31%). Inclusion of the results from the chemotherapy review improved the PPV to 100% without compromising sensitivity (95.7%). This cohort provides a reliable source for future comparative effectiveness and clinical epidemiology studies in pediatric AML. Pediatr Blood Cancer 2013; 60: 508–511. © 2012 Wiley Periodicals, Inc.

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