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  • Title: Vitamin A status, hospitalizations, and other outcomes in young children with sickle cell disease.
    Author: Schall JI, Zemel BS, Kawchak DA, Ohene-Frempong K, Stallings VA.
    Journal: J Pediatr; 2004 Jul; 145(1):99-106. PubMed ID: 15238915.
    Abstract:
    OBJECTIVE: To determine the relation of serum vitamin A status to growth, nutritional and hematologic status, and to the number of hospitalizations in children with sickle cell disease-SS (homozygous for the S allele, SCD-SS). STUDY DESIGN: Children (2-9.9 years of age) with SCD-SS were assessed for serum retinol, hemoglobin, hematocrit, reticulocyte count, height, weight, body mass index, and recalled dietary intake. Vitamin A status was defined on the basis of serum retinol concentration as suboptimal (<30 microg/dL) and normal (> or =30 microg/dL). Hospitalizations were determined for 1 year after vitamin A assessment. RESULTS: Mean serum retinol was 26.7 +/- 6.8 microg/dL in 66 subjects (39 girls) and was suboptimal in 66% of children. Compared with those with normal status, children with suboptimal vitamin A had significantly lower body mass index z score (-0.7 +/- 1.0 vs -0.1 +/- 0.6) and hemoglobin (7.9 +/- 1.1 vs 8.5 +/- 1.1), and hematocrit (23.3 +/- 3.0 vs 25.1 +/- 3.8) and significantly more hospitalizations (2.8 +/- 2.0 vs 0.7 +/- 0.8). After adjusting for age and sex, suboptimal vitamin A status was associated with a 10-fold increased risk for hospitalization (OR, 10.5; 95% CI, 2.3, 48.6) and with increased pain (OR,5.3; 95% CI, 1.3, 21.6) and fever episodes (OR, 6.4; 95% CI, 1.7, 24.9) requiring hospitalization. CONCLUSIONS: Suboptimal vitamin A status was prevalent in US children with SCD-SS and was associated with increased hospitalizations and poor growth and hematologic status.
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