. Author manuscript; available in PMC: 2016 May 12.

Published in final edited form as: Pediatr Phys Ther. 2015 Winter;27(4):316–327. doi: 10.1097/PEP.0000000000000193

TABLE 2.

Descriptive Statistics (Group Mean ± SD and Range) for Amount of Variability (V_amount) and Structure of Variability (V_structure)

Group and Condition	PL (cm)^a	COP Area (cm)²	SD (cm)		SampEn		RenyiEn^a
Group and Condition	PL (cm)^a	COP Area (cm)²	AP	ML	AP^a	ML^a	RenyiEn^a
Healthy EO
Mean ± SD	99.06 ± 22.46^a	0.86 ± 0.46	0.25 ± 0.05	0.25 ± 0.08	0.35 ± 0.09^a	0.37 ± 0.11^a	5.09 ± 0.16^a
Range	64.70–139.60	0.31–2.00	0.15–0.34	0.14–0.49	0.22–0.55	0.22–0.62	4.75–5.29
Healthy EC
Mean ± SD	126.17 ± 27.19^a	1.07 ± 0.50	0.28 ± 0.07	0.27 ± 0.08	0.40 ± 0.09^a	0.43 ± 0.13^a	5.10 ± 0.16^a
Range	79.85–176.50	0.45–2.00	0.17–0.44	0.15–0.47	0.22–0.52	0.23–0.74	4.83–5.47
Injured EO
Mean ± SD	82.93 ± 19.86^a	0.98 ± 0.72	0.25 ± 0.08	0.29 ± 0.12	0.30 ± 0.10^a	0.28 ± 0.10^a	4.96 ± 0.16^a
Range	61.53–143.20	0.30–2.71	0.12–0.43	0.14–0.53	0.15–0.51	0.10–0.48	4.69–5.15
Injured EC
Mean ± SD	106.99 ± 23.50^a	1.31 ± 0.87	0.30 ± 0.08	0.30 ± 0.11	0.33 ± 0.11^a	0.33 ± 0.10^a	5.01 ± 0.13^a
Range	71.22–160.40	0.42–4.11	0.16–0.47	0.15–0.47	0.16–0.58	0.18–0.53	4.75–5.30

Indicates a statistical difference between cohorts.

Abbreviations: AP, anterior-posterior; COP, center of pressure; EC, eyes closed; EO, eyes open; ML medial-lateral; PL, path length; RenyiEn, Renyi entropy; SampEn, sample entropy; SD, standard deviation.