Table 4.

First-year height velocity (cm/y) during rhGH treatment in low (≤30 µg/L) and high (>30 µg/L) IGF-I groups according to different stimulated GH peak concentrations (N = 514)

	Baseline GH < cutoff			Baseline GH ≥ cutoff
GH Cutoff (µg/L)	AHV Mean (cm/y)	AHV SD (cm/y)	n	AHV Mean (cm/y)	AHV SD (cm/y)	n
IGF-I ≤ 30
0	—	—	—	10.19	2.51	59
1	13.24	1.98	7	9.78	2.29	52
2	12.63	2.31	9	9.75	2.30	50
3	12.57	2.04	13	9.52	2.21	46
4	12.52	1.97	14	9.47	2.21	45
5	11.69	2.47	18	9.53	2.25	41
6	11.21	2.52	25	9.44	2.24	34
7	11.09	2.49	31	9.20	2.16	28
8	11.03	2.36	36	8.88	2.18	23
9	10.89	2.38	38	8.93	2.28	21
10	10.64	2.43	44	8.90	2.35	15
IGF-I > 30
0	—	—	—	8.28	1.58	455
1	9.85	0.96	5	8.27	1.58	450
2	8.09	2.06	22	8.29	1.56	433
3	8.40	1.89	36	8.27	1.56	419
4	8.42	1.77	68	8.26	1.55	387
5	8.46	2.07	118	8.22	1.37	337
6	8.40	1.93	167	8.21	1.34	288
7	8.38	1.83	213	8.20	1.33	242
8	8.33	1.78	246	8.23	1.31	209
9	8.29	1.71	291	8.28	1.33	164
10	8.34	1.69	334	8.13	1.22	121

Abbreviations: AHV, annualized height velocity; GH, growth hormone; IGF-I, insulin-like growth factor-I.