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. Author manuscript; available in PMC: 2025 Mar 1.
Published in final edited form as: Dev Sci. 2023 Sep 7;27(2):e13443. doi: 10.1111/desc.13443

Table 2.

Demographic characteristics of three participant groups

RD-Only RD + MD Other

N % N % N %
Total 30 37 19
Gender
  Boys 18 60.0 17 45.9 8 42.1
  Girls 12 40.0 20 54.1 11 57.9
Grade
  3rd - - 1 2.7 2 10.5
  4th 1 3.3 1 2.7 1 5.3
  5th 14 46.7 18 48.6 9 47.4
  6th 14 46.7 15 40.5 6 31.6
  7th 1 3.3 2 5.4 1 5.3
Race
  African American/Black - - 3 8.1 1 5.3
  Asian - - - - - -
  White 25 83.3 28 75.7 16 84.2
  Multiracial or Multi-ethnic 4 13.3 4 10.9 2 10.6
  Missing 1 3.3 - - - -
Ethnicity
  Latina/o/x - - 5 13.5 1 5.3
Prior SLD diagnosis
  RD or dyslexia 25 83.3 32 86.5 13 68.4
  MD or dyscalculia - - 17 45.9 - -
  ADHD 12 40.0 15 40.5 6 31.6