Table 1.

Demographic data for each NMI group by age window

Age window	NMI group	sNMI		fNMI
		Age	Sex, M/F	Age	Sex, M/F
10	High	10.15 ± 1.09	68/71	10.48 ± 1.09	28/30
	Low	10.26 ± 1.08	68/71	9.92 ± 0.96	28/30
11	High	10.99 ± 1.16	76/69	11.38 ± 1.15	33/36
	Low	11.10 ± 1.18	76/70	10.78 ± 1.24	33/36
12	High	12.13 ± 1.24	81/69	12.35± 1.08	41/39
	Low	12.06 ± 1.14	81/69	12.09 ± 1.27	41/39
13	High	13.27 ± 1.19	82/71	13.31 ± 1.08	44/46
	Low	12.85 ± 1.15	82/71	13.13 ± 1.05	44/46
14	High	14.35 ± 1.10	83/81	14.26 ± 1.13	50/57
	Low	13.81 ± 1.19	83/81	14.02 ± 1.13	50/57
15	High	15.21 ± 1.12	85/90	15.16 ± 1.06	58/67
	Low	15.00 ± 1.18	85/91	15.12 ± 1.20	58/67
16	High	16.09 ± 1.14	82/95	15.97 ± 1.11	59/75
	Low	15.99 ± 1.20	82/95	16.15 ± 1.13	59/75
17	High	16.90 ± 1.13	77/103	16.90 ± 1.22	63/81
	Low	17.11 ± 1.24	77/103	16.95 ± 1.10	63/81
18	High	17.68 ± 1.07	77/99	17.88 ± 1.14	63/81
	Low	18.20 ± 1.23	77/99	17.99 ± 1.17	63/81
19	High	18.53 ± 1.05	69/91	18.58 ± 0.93	56/75
	Low	19.03 ± 1.08	69/91	19.06 ± 1.17	56/75
20	High	19.25 ± 0.97	55/73	19.10 ± 0.84	45/59
	Low	19.64 ± 1.00	55/73	19.76 ± 0.97	45/59

Each age window centered at age a includes participants of age a ± 2.