Assuntos
Hipersensibilidade Alimentar , Adolescente , Anafilaxia/diagnóstico , Anafilaxia/etiologia , Anafilaxia/psicologia , Anafilaxia/terapia , Criança , Pré-Escolar , Diagnóstico Diferencial , Hipersensibilidade Alimentar/diagnóstico , Hipersensibilidade Alimentar/psicologia , Hipersensibilidade Alimentar/terapia , Humanos , Lactente , Recém-Nascido , Urticária/diagnóstico , Urticária/etiologia , Urticária/terapiaRESUMO
OBJECTIVE: To compare the cost-benefit profile of reticulocyte hemoglobin content (CHr) with hemoglobin (Hb) alone and Hb as a component of the complete blood count (CBC) for detection and treatment of iron deficiency in 9- to 12-month-old infants. STUDY DESIGN: Cohort simulations were used to compare CHr with Hb from a societal perspective. Assumptions included a 9% prevalence of iron deficiency and testing characteristics/costs of CHr, Hb, and CBC (CHr <27.5 pg: sensitivity 83%, specificity 72%, $11; Hb <11 g/dL: sensitivity 26%, specificity 95%, $5; CBC Hb<11g/dL, $15), as well as cost of iron therapy ($61 for established anemia). Sensitivity analyses were performed. RESULTS: Under current market conditions, the incremental cost to diagnose and treat iron deficiency, compared with diagnosing and treating anemia by Hb, was only $22 per patient screened ($440 per case of anemia prevented; number needed to treat = 20). With a 10-year time horizon incorporating risks and costs of neurocognitive delays associated with untreated iron deficiency, the cost of the CHr strategy was $280 per case of anemia prevented. CONCLUSIONS: CHr is an affordable strategy to prevent anemia in infants with possible iron deficiency.