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Serum Copper in Children (6–12 Years Old): An Age-correction Factor
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1973
Year
Epidemiologic ResearchLogistic AnalysisRaceAdolescent MedicineBlack WomenClinical EpidemiologySerum Copper LevelsRegression ValuesRacial GroupClinical ChemistryPublic HealthLaboratory MedicineMedical StatisticPopulationPopulation ChildrenSerum CopperClinical NutritionTrace MetalSchool Children 6EpidemiologyBioactive MetalPediatricsChild NutritionMetal ToxicityDemographyMedicine
Serum copper levels in 681 school children 6 to 12 years of age have shown a significant relationship to age and race for which regression values and formulae for correction to adult normal values of 101 ± 32 μg. per 100 ml. (± 2 S.D.) are given, and a nomogram for this operation provided. No sex difference was noted. A significant racial difference was noted, the level for Negroes being higher than that for Caucasians and Mexican- Americans, whereas the levels for the last 2 did not differ significantly from each other. Regression values for the mean (in μg. per 100 ml.) were 159.0 – 2.96 × age for Caucasians and Mexican-Americans and 183.6 – 3.99 × age for Negroes, and the corrections have been considered on the basis of these two groupings, allowing use of a single adult normal mean and range for evaluation of serum copper levels in children.