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. 2021 Jan 15;11:607973. doi: 10.3389/fpsyg.2020.607973

TABLE 3.

Means and standard deviations for the HTKS and Woodcock Johnson academic measures.

Variable Pre-kindergarten
Kindergarten
First grade
Fall Spring Fall Spring Fall Spring
HTKS20 14.2 (7.5) 16.9 (5.4) 17.4 (4.2) 17.6 (4.8) N/A
HTKS40 N/A 28.7 (9.3) 32.1 (8.7) 34.6 (5.0) 36.5 (3.7)
WJ Letter-Word Identification W score 348.3 (17.4) 359.1 (24.8) 371.0 (28.1) 404.2 (28.6) 428.4 (34.3) 460.4 (25.6)
WJ Applied Problems W score 415.4 (10.8) 427.7 (15.2) 432.6 (15.9) 444.5 (15.8) 459.5 (16.7) 475.0 (18.4)

Data reflect a 2-month bandwidth.