Table 2. Descriptive statistics for repeated measurements by age groups.

The data have been represented by N, mean, standard deviation, and median.

Age Category	Descriptive  Statistic	Targets Mastered Time 1: Baseline	Targets Mastered Time 2: 2 Weeks	Targets Mastered Time 3: 4 Weeks	Targets Mastered Time 4: 6 Weeks	Targets Mastered Time 5: 8 Weeks	Targets Mastered Time 6: 10 Weeks	Targets Mastered Time 7: 12 Weeks	Targets Mastered Time 8: 14 Weeks	Targets Mastered Time 9: 16 Weeks	Targets Mastered Time 10: 18 Weeks	Targets Mastered Time 11: 20 Weeks	Targets Mastered Time 12: 22 Weeks
1 Year to 4 Years	Mean	14.33	17.55	21.11	25.78	33.11	40.78	52.11	56.78	60.00	61.22	62.11	62.11
	n	9	9	9	9	9	9	9	9	9	9	9	9
	Standard Deviation	13.59	17.270	19.92	19.82	24.83	24.52	30.48	33.77	35.85	38.23	38.23	38.23
	Median	9	11	15	28	31	38	50	58	58	58	60	60
5 Years-8 Years	Mean	9.05	11.33	12.95	14.52	17.52	22.29	26.57	28.86	31.05	32.57	33	33
	n	21	21	21	21	21	21	21	21	21	21	21	21
	Standard Deviation	12.24	12.79	13.79	14.46	16.27	18.45	20.49	21.22	22.23	24.51	25.57	25.57
	Median	5	9	11	11	16	17	22	25	27	27	27	27
9 Years-12 Years	Mean	14.25	18.5	21.08	24.5	28.92	37.67	47.25	52.5	55.92	57.58	58.17	58.17
	n	12	12	12	12	12	12	12	12	12	12	12	12
	Standard Deviation	13.32	15.45	16.32	16.14	21.26	18.93	21.93	25.24	28.27	29.51	30.47	30.47
	Median	8	11.5	15	16.5	19	37	50	56	57.5	58	58	58
13 Years-16 Years	Mean	8.57	10.43	11.71	16.28	29.00	33.57	35.43	37.57	38.57	39.86	39.86	44.83
	n	7	7	7	7	7	7	7	7	7	7	7	6
	Standard Deviation	10.79	11.94	11.73	19.12	25.02	29.99	31.53	30.08	30.73	29.82	29.82	29.32
	Median	6	8	14	14	20	20	21	24	24	24	24	34.5
17 Years-73 Years	Mean	4.5	5.5	6	8.5	16	29.5	31	31.5	31.5	31.5	31.5	31.5
	n	2	2	2	2	2	2	2	2	2	2	2	2
	Standard Deviation	4.95	4.95	4.24	0.71	9.89	10.61	12.72	13.44	13.44	13.44	13.44	13.44
	Median	4.5	5.5	6	8.5	16	29.5	31	31.5	31.5	31.5	31.5	31.5
Total	Mean	10.97	13.76	15.86	18.86	24.47	31	37.33	40.64	43.06	44.47	44.94	45.64
	n	51	51	51	51	51	51	51	51	51	51	51	50
	Standard Deviation	12.31	14.07	15.38	16.64	20.62	21.96	25.66	27.54	29.26	30.61	31.24	31.15
	Median	8	10	14	14	20	27	33	37	38	38	38	38.5