Table 2.

Partial correlation coefficients for fasting and 2-h PI-to-CP ratios with indices of β-cell response, DIs, and insulin sensitivity

	Fasting PI-to-CP ratio		2-h PI-to-CP ratio
	r, P value		r, P value
	African American participants	European American participants	African American participants	European American participants
β-Cell response
Φb (10−9 min−1)	0.4, 0.01	0.02, 0.88	0.3, 0.05	−0.01, 0.95
Φd (10−9)	−0.22, 0.13	0.03, 0.82	−0.14, 0.33	0.07, 0.64
Φs (10−9 min−1)	0.23, 0.1	0.08, 0.55	0.24, 0.09	0.1, 0.48
Φtot (10−9 min−1)	0.16, 0.25	0.01, 0.92	0.12, 0.39	0.05, 0.69
DIs
DId	−0.39, 0.005	−0.04, 0.79	−0.35, 0.01	−0.04, 0.74
DIs	0.04, 0.79	−0.01, 0.94	0.08, 0.59	−0.03, 0.85
DItot	−0.1, 0.53	−0.07, 0.59	−0.13, 0.4	−0.09, 0.48
Insulin sensitivity	−0.46, 0.003	−0.14, 0.34	−0.46, 0.002	−0.23, 0.13

Data are adjusted for BMI. Bold values are statistically significant (P < 0.05).