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Table 4 Approximate entropy t-scores for comparison of anterior-posterior postural sway

From: Use of information entropy measures of sitting postural sway to quantify developmental delay in infants

r value used in ApEn calculation
m lag 0.05*std 0.1*std 0.2*std 0.4*std 0.8*std 1.5*std 2.5*std 3*std 3.5*std 4*std 5*std
2 1 0.83 0.82 0.84 0.99 0.99 1.03 0.92 1.46 1.14 0.54 0.69
4 1 0.50 0.17 0.25 0.60 0.61 0.73 0.36 0.87 0.59 0.28 0.12
8 1 -1.04 0.68 0.41 0.28 0.24 0.40 -0.19 0.53 0.30 0.22 0.17
2 4 0.61 0.60 0.46 0.16 0.02 0.40 -0.30 0.41 0.23 0.24 0.04
4 4 1.15 1.05 0.84 0.48 0.17 0.17 -0.38 0.39 0.24 0.31 0.20
8 4 -0.80 0.55 1.03 1.01 0.39 0.49 -0.48 0.44 0.12 0.36 0.46
2 8 1.27 1.01 0.90 0.36 0.10 0.21 -0.33 0.39 0.25 0.35 0.17
4 8 0.15 1.26 1.09 0.90 0.36 0.54 -0.42 0.32 0.18 0.42 0.39
8 8 -1.04 -0.49 0.90 1.47 0.85 0.34 -0.05 0.21 0.20 0.34 0.43
  1. t-scores for comparison of anterior-posterior postural sway of infants with typical development and with delayed development, based on approximate entropy calculated with various m, lag and r values, are all lower than 3.04.
  2. Note: No t-scores with magnitude equal or larger than 3.04 are in this table.