Table 5.

Percentages of predicted ages at peak height velocity (PHV) within ±0.5 year of observed age at PHV with the new: Moore-1 (M-1), Moore-2 (M-2) and original: Mirwald (M) equations by age at prediction in boys and girls of contrasting maturity status

Age group	Boys									Girls
	Early (n = 32–36)			Average (n = 106–115)			Late (n = 37–40)			Early (n = 23–28)		Average (n = 123–140)		Late (n = 25–30)
	M-1	M-2	M	M-1	M-2	M	M-1	M-2	M	M-1	M	M-1	M	M-1	M
8	66	75	72	0	1	3	0	0	0	0	4	54	56	0	0
9	79	79	71	7	12	19	0	0	0	0	0	58	64	0	0
10	66	66	37	28	31	43	0	0	0	0	0	66	65	3	10
11	31	25	11	46	50	60	0	0	0	0	0	58	55	14	32
12	3	11	3	66	63	63	0	0	0	0	0	59	51	46	65
13	0	9	0	71	71	63	0	0	16	0	0	57	47	53	77
14	0	8	3	78	74	62	5	3	40	0	0	46	34	52	76
15	0	0	0	73	68	62	11	11	51	0	0	37	20	67	79
16	0	0	0	63	62	60	13	8	55	0	0	24	6	65	60
17	0	0	0	56	45	45	14	14	49
18	0	0	0	45	34	30	23	26	56

M-1: boys—recommended equation, age and sitting height, girls—recommended equation, age and height; M-2: boys—alternative equation, age and height [13]; M: original equation [3]