Association of Type 1 Diabetes With Standardized Test Scores of Danish Schoolchildren

JAMA. 2019 Feb 5;321(5):484-492. doi: 10.1001/jama.2018.21819.

Abstract

Importance: Type 1 diabetes has been associated with cardiovascular disease and late complications such as retinopathy and nephropathy. However, it is unclear whether there is an association between type 1 diabetes and school performance in children.

Objective: To compare standardized reading and mathematics test scores of schoolchildren with type 1 diabetes vs those without diabetes.

Design, setting, and participants: Population-based retrospective cohort study from January 1, 2011, to December 31, 2015 (end date of follow-up), including Danish public schoolchildren attending grades 2, 3, 4, 6, and 8. Test scores were obtained in math (n = 524 764) and reading (n = 1 037 006). Linear regression models compared outcomes with and without adjustment for socioeconomic characteristics.

Exposures: Type 1 diabetes.

Main outcomes and measures: Primary outcomes were pooled test scores in math and reading (range, 1-100).

Results: Among 631 620 included public schoolchildren, the mean (SD) age was 10.31 (SD, 2.42) years, and 51% were male; 2031 had a confirmed diagnosis of type 1 diabetes. Overall, the mean combined score in math and reading was 56.11 (SD, 24.93). There were no significant differences in test scores found between children with type 1 diabetes (mean, 56.56) and children without diabetes (mean, 56.11; difference, 0.45 [95% CI, -0.31 to 1.22]). The estimated difference in test scores between children with and without type 1 diabetes from a linear regression model with adjustment for grade, test topic, and year was 0.24 (95% CI, -0.90 to 1.39) and 0.45 (95% CI, -0.58 to 1.49) with additional adjustment for socioeconomic status.

Conclusions and relevance: Among Danish public schoolchildren, there was no significant difference in standardized reading and mathematics test scores of children with type 1 diabetes compared with test scores of children without diabetes.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Case-Control Studies
  • Child
  • Denmark
  • Diabetes Mellitus, Type 1 / blood
  • Diabetes Mellitus, Type 1 / ethnology
  • Diabetes Mellitus, Type 1 / psychology*
  • Educational Measurement*
  • Educational Status
  • Female
  • Glycated Hemoglobin / analysis
  • Humans
  • Male
  • Mathematics*
  • Reading*
  • Retrospective Studies
  • Socioeconomic Factors

Substances

  • Glycated Hemoglobin A
  • hemoglobin A1c protein, human