. Author manuscript; available in PMC: 2010 Jul 1.

Published in final edited form as: Arch Phys Med Rehabil. 2009 Jul;90(7):1176–1184. doi: 10.1016/j.apmr.2009.01.031

Table 4.

Inter-session (within a week per month) reliability, as expressed with the Intra-class correlation coefficient (ICC), of infant sitting posture for all nonlinear parameters

Variables	ICC’s
	1^st Month	2^nd Month	3^rd Month	4^th Month	Mean
ApEn AP	0.17	0.33	0.74	0.07	0.33
ApEn ML	0	0.52	0.32	0.29	0.28
LyE AP	0.07	0.30	0.50	0.14	0.25
LyE ML	0.28	0.35	0.34	0.56	0.38
CoD AP	0.32	0.10	0.72	0.28	0.36
CoD ML	0	0.03	0.40	0.34	0.19

Abbreviations: ApEn = approximate entropy, LyE = luapunov exponent, CoD = correlation dimension, AP = anterior-posterior, ML = medial-lateral