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. 2019 Oct-Dec;13(4):427–435. doi: 10.1590/1980-57642018dn13-040010

Table 1. Distribution of TDE groups according to school groups.

TDE groups Early elementary school
(n=68)		 Late elementary school
(n=100)
Control 39 67
MD 18 18
MSD 8 5
SD 3 10

MD: Math Difficulties; SD: Spelling Difficulties; MSD: Math and Spelling Difficulties.