Table 4. The baseline parameters predicting ΔHt SDS and ΔGV after 3 years of GH treatment in patients with idiopathic or organic GHD.

Parameters	Idiopathic GHD (n = 131)				Organic GHD (n = 32)
	Parameter	β a	P value	R 2b	Parameter	β a	P value	R 2b
ΔHt SDS	IGF-1 SDS	−0.209	< 0.001	0.157	HT SDS	−0.415	0.045	0.679
	BA	−0.058	0.002	0.094
ΔGV	MPH SDS	0.964	0.016	0.066	HT SDS	−2.963	0.022	0.241

GHD = growth hormone deficiency, Ht SDS = height standard deviation score, GH = growth hormone, BA = bone age, IGF-1 SDS = insulin like growth factor-1 standard deviation score, GV = growth velocity, MPH = mid-parental height.

^aParameter estimate; ^bPartial variability.