RT Journal Article
SR Electronic
T1 Elevated Blood Lead Levels and Reading Readiness at the Start of Kindergarten
JF Pediatrics
JO Pediatrics
FD American Academy of Pediatrics
SP 1081
OP 1089
DO 10.1542/peds.2012-2277
VO 131
IS 6
A1 McLaine, Pat
A1 Navas-Acien, Ana
A1 Lee, Rebecca
A1 Simon, Peter
A1 Diener-West, Marie
A1 Agnew, Jacqueline
YR 2013
UL http://pediatrics.aappublications.org/content/131/6/1081.abstract
AB OBJECTIVE: To evaluate the relationship between blood lead levels (BLLs) and reading readiness at kindergarten entry, an early marker of school performance, in a diverse urban school population.METHODS: Kindergarten reading readiness test scores for children attending public kindergarten in Providence, Rhode Island, were linked to state health department records of blood lead testing by using individual identifiers. The study population (N = 3406) was 59% Hispanic. For each child, the geometric mean BLL was estimated by using all previously reported BLLs. Analyses were adjusted for gender, age, year enrolled, race, child language, and free/reduced lunch status as a measure of socioeconomic status.RESULTS: The median geometric mean BLL was 4.2 µg/dL; 20% of children had at least 1 venous BLL ≥10 µg/dL. Compared with children with BLLs <5 µg/dL, the adjusted prevalence ratios (95% confidence interval [CI]) for failing to achieve the national benchmark for reading readiness were 1.21 (1.19 to 1.23) and 1.56 (1.51 to 1.60) for children with BLLs of 5 to 9 and ≥10 µg/dL, respectively. On average, reading readiness scores decreased by 4.5 (95% CI: −2.9 to −6.2) and 10.0 (95% CI: −7.0 to −13.3) points for children with BLLs of 5 to 9 and ≥10 µg/dL, respectively, compared with BLLs <5 µg/dL.CONCLUSIONS: BLLs well below 10 µg/dL were associated with lower reading readiness at kindergarten entry. The high prevalence of elevated BLLs warrants additional investigation in other high-risk US populations. Results suggest benefits from additional collaboration between public health, public education, and community data providers.Abbreviations:BLL — blood lead levelCI — confidence intervalGM — geometric meanPALS-K — Phonological Awareness Literacy Screening–KindergartenPPSD — Providence Public School DistrictRIDH — Rhode Island Department of HealthSES — socioeconomic status