Table 1.

Clinical characteristics of the DPP participants treated with metformin by racial/ethnic group

	Whites	African Americans	Hispanics	All
N	602	221	162	985
Male	225	58	52	335
Female	377	163	110	650
Age (years)
< 40	65	27	36	128
40 – 49	203	79	56	338
50 – 59	197	70	50	317
> = 60	137	45	20	202
BMI (kg/m2)
< 30	181	87	45	313
30 to < 36	227	71	63	361
> = 36	194	63	54	311
Fasting plasma glucose (mg/dL)	107.05 ± 7.64	108.35 ± 8.00	106.49 ± 8.21	107.25 ± 7.84
Fasting plasma insulin (μIU/mL)	26.03 ± 14.92	28.93 ± 15.76	27.93 ± 12.62	26.99 ± 14.80
HbA1c (%)	5.80 ± 0.43	6.20 ± 0.58	5.89 ± 0.51	5.91 ± 0.51

Data for levels of plasma glucose, insulin and HbA1c are presented as means ± SD

BMI body mass index