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Table 2 Estimated means and effect sizes for postural control and step initiation measurements

From: Postural control processes during standing and step initiation in autism spectrum disorder

 ASD (n = 17)TD (n = 20)Effect sizep
Neutral stance
 COPML (cm)0.44 (0.06)0.26 (0.05)0.730.04*
 COPAP (cm)0.61 (0.07)0.47 (0.06)0.500.15
 MI (bit)0.61 (0.04)0.55 (0.04)0.320.35
 COP Length (cm)34.65 (3.91)24.11 (3.59)0.650.06
Romberg 1
 COPML (cm)0.77 (0.06)0.62 (0.06)0.580.10
 COPAP (cm)0.83 (0.10)0.58 (0.09)0.620.08
 MI (bit)0.66 (0.02)0.62 (0.02)0.440.20
 COP length (cm)44.36 (4.01)36.23 (3.68)0.490.16
Circular sway
 COPML (cm)7.36 (0.48)6.89 (0.44)0.240.49
 COPAP (cm)3.80 (0.24)4.03 (0.22)0.240.49
 MI (bit)0.57 (0.04)0.69 (0.03)0.830.02*
 COP length (cm)454.84 (40.95)351.81 (37.55)0.610.08
Stepping
 Maximum APA (cm)4.57 (0.49)4.54 (0.48)0.010.97
 APA duration0.49 (0.05)0.43 (0.05)0.290.41
 Body transfer duration (second)0.18 (0.01)0.24 (0.01)1.110.003**
 Mean body transfer velocity (cm/second)194.73 (14.65)144.62 (13.43)0.830.02*
 Maximum ML (cm)10.82 (0.80)13.02 (0.77)0.670.06
  1. Note. COPML COP variability in the ML direction, COPAP COP variability in the AP direction, MI mutual information, COP Length COP trajectory length, Maximum ML body transfer maximum lateral sway
  2. Covariates appearing in the model are evaluated at the following value: Height = 155.130 cm. Effect size was calculated using Cohen’s d. Data are reported as estimated mean and standard error in parentheses
  3. *p < 0.05 level; **p < 0.01
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