Table 2. Multiple regression analyses with peak GH response to GHRP-2.

	β	P	VIF
Age	0.005	0.94	1.10
Sex (male)	-0.047	0.68	2.68
BMI	-0.210	0.007	1.24
Creatinine	-0.193	0.095	2.77
Free thyroxine	0.440	< 0.001	1.13
Tumor height	-0.254	< 0.001	1.18

GH, growth hormone; GHRP-2, growth hormone-releasing peptide-2; BMI, body mass index; VIF, Variance inflation factor.