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. Author manuscript; available in PMC: 2020 Jun 15.
Published in final edited form as: Transl J Am Coll Sports Med. 2019 Jun 15;4(12):84–95. doi: 10.1249/TJX.0000000000000087

Table 6.

Influence of time-on-task (TOT) on math achievement

Fixed effect Estimate SE z p F p
Intercept 106.80 6.64 16.09 0.000
Year (linear change) 1.81 1.38 1.31 0.191 1.72 0.191
% TOT post-lesson 0.00 0.02 −0.13 0.898 0.02 0.898
Year * % TOT post-lesson −0.01 0.02 −0.38 0.704 0.14 0.704
Age −0.90 0.84 −1.07 0.287 1.14 0.287
Gender 3.62 0.057
 Male 1.91 1.01 1.90 0.057
 Female (reference) - - - -
Race 1.24 0.290
 White (reference) - - - -
 Black/African American −4.79 2.53 −1.90 0.058
 Asian 4.61 4.03 1.14 0.254
 American Indian /Alaska Native −4.79 5.61 −0.85 0.393
 Two or more races −0.85 1.64 −0.52 0.603
 Unknown −5.57 8.10 −0.69 0.492
Free/reduced meals 17.53 0.000
 Yes −4.71 1.13 −4.19 0.000
 No (reference) - - - -
BMI Percentile 0.01 0.02 0.51 0.614 0.26 0.614
PACER Laps 0.25 0.04 6.87 0.000 47.22 0.000

Random effect Estimate SE z p

Student 113.19 7.98 14.18 0.000
Residual 27.13 1.38 19.73 0.000