Table 1.

Number of subjects and motion parameters of each age point

	Age, mo
	<1	3	6	9	12	18	24
No. of subjects	29	26	33	32	32	31	20
Male	15	14	17	17	16	17	8
Female	14	12	16	15	16	14	12
FD (mean ± SE), mm	$0.22\hspace{0.17em}\pm \hspace{0.17em}0.04$	$0.16\hspace{0.17em}\pm \hspace{0.17em}0.03$	$0.15\hspace{0.17em}\pm \hspace{0.17em}0.02$	$0.12\hspace{0.17em}\pm \hspace{0.17em}0.01$	$0.15\hspace{0.17em}\pm \hspace{0.17em}0.03$	$0.21\hspace{0.17em}\pm \hspace{0.17em}0.05$	$0.09\pm 0.01$
DAS evaluated at 5/6 y	16	16	17	19	19	22	17