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Table 5 Multilevel regression coefficients (B) and Standard Error (SE) for each factor predicting time-on-task

From: Moderate-to-vigorous physically active academic lessons and academic engagement in children with and without a social disadvantage: a within subject experimental design

  Model 1 Model 2 Model 3 Model 4
  B SE p B SE p B SE p B SE p
Fixed effects             
Random intercept 96.18 5.39   97.37 4.18   97.45 4.19   99.21 4.24  
Gradea 4.98 1.34 0.00 4.97 1.34 0.00 4.97 1.34 0.00 5.02 1.34 0.00
BMI −0.75 0.22 0.00 −0.75 0.23 0.00 −0.75 0.23 0.00 −0.74 0.23 0.00
SDCb −4.47 1.58 0.00 −4.57 1.57 0.00 −4.95 1.99 0.01 −4.58 1.57 0.00
Midway observationc −2.90 1.25 0.02 −2.87 1.22 0.02 −2.88 1.22 0.02 −5.81 1.74 0.00
End observationc 0.51 1.25 0.68 0.67 1.22 0.58 0.67 1.22 0.58 −2.17 1.71 0.11
Conditiond     4.19 0.99 0.00 4.02 1.13 0.00 0.40 1.72 0.82
Condition*SDC        0.71 2.34 0.76    
Condition*midway           5.63 2.41 0.02
Condition*end           5.54 2.40 0.02
Random effects             
Variance between students 12.57 5.40 0.02 13.28 5.35 0.01 13.32 5.36 0.01 13.70 5.35 0.01
Variance within students 108.39 8.21 0.00 103.24 7.82 0.00 103.18 7.81 0.00 101.14 7.66 0.00
Deviance 3250.83 3233.27 3233.18 3225.25
  1. a,b,c,d Respectively second grade, non-SDC, start observation and control condition were the reference categories.