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Low gestational age at birth and difficulties in school—A matter of ‘dose’

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  • Rikke Wiingreen
  • Gorm Greisen
  • Jannet Svensson
  • Bo Mølholm Hansen

Abstract

Objectives: Several studies suggest a relationship between gestational age at birth and risk of school difficulties. Our study aimed to investigate the association between the entire range of gestational ages and significant school difficulties measured as 1) More than nine hours per week special educational support and 2) Failing to complete compulsory school. Methods: A population-based register study including all children attending the Danish compulsory school in 2015/2016 and all live-born infants born in Denmark from 1992 to 1997. Data were collected and linked using multiple registers held by Statistic Denmark. Multiple logistic regression analyses were used to estimate the association between gestational age and significant school difficulties, adjusted for explanatory variables. Results: For measurement 1) “Special educational support” 615,789 children entered the analyses after exclusion of those with missing neonatal data. The risk of special educational support increased gradually across the entire range of gestation from 40 to ≤24 weeks: The adjusted odds ratio was 1.07 (95% confidence interval 1.03–1.12) at 39 weeks of gestational and 6.18 (95% confidence interval 5.17–7.39) at gestational ages

Suggested Citation

  • Rikke Wiingreen & Gorm Greisen & Jannet Svensson & Bo Mølholm Hansen, 2018. "Low gestational age at birth and difficulties in school—A matter of ‘dose’," PLOS ONE, Public Library of Science, vol. 13(6), pages 1-13, June.
    • Handle: RePEc:plo:pone00:0198482
    DOI: 10.1371/journal.pone.0198482
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