. Author manuscript; available in PMC: 2009 May 1.

Published in final edited form as: J Pediatr. 2008 Mar 6;152(5):612–617.e1. doi: 10.1016/j.jpeds.2007.12.036

TABLE 3.

Associations between indices of insulin dynamics and energy intake

	Association with Energy Intake

	β-coefficient	P-value
Fasting Indices

Insulin	0.164	0.097
I/G ratio	0.241	0.044
HOMA-IR	0.244	0.042
C-peptide	0.061	0.552
C/I ratio	-0.118	0.213

Hyperglycemic Clamp Indices

First-phase insulin	0.228	0.032
First-phase C-peptide	0.207	0.046
First-phase C/I ratio	-0.163	0.125
Steady-state insulin	0.244	0.053
Steady-state C-peptide	0.188	0.175
Steady-state C/I ratio	-0.205	0.108
SI_clamp	-0.286	0.042

Covariates for analysis included race, sex, skeletal age, interaction between sex and skeletal age (a proxy for pubertal status), fat-free mass, fat mass, socioeconomic status, and number of foods in the buffet meal that were rated as acceptable. I/G ratio: insuln/glucose ratio; HOMA-IR: homeostasis model assessment of insulin resistance index; C/I ratio: C-peptide/insulin ratio; SI_clamp: insulin sensitivity estimated during hyperglycemic clamp.