Table 4 Beta cell function (measured with HOMA Model [19] and prevalence of metabolic syndrome according to ATPIII criteria [20] in subjects discordant and concordant for the diagnosis of glucose tolerance with OGTT and HbA1c

Number

100

150

146

50

FPG (mg/dl)

5.2 ± 0.03

6.0 ± 0.06

5.9 ± 0.04

5.3 ± 0.04

< 0.0001

2-h PG (mg/dl)

5.7 ± 0.1

8.0 ± 0.2

7.2 ± 0.2

5.9 ± 0.1

< 0.0001

HbA1c (%)

6.00 ± 0.02

5.31 ± 0.03

5.35 ± 0.02

5.91 ± 0.03

< 0.0001

Triglycerides (mM)

1.41 ± 0.08

1.72 ± 0.07

1.68 ± 0.09

1.62 ± 0.10

< 0.05

HDL (mM)

1.21 ± 0.03

1.08 ± 0.02

1.09 ± 0.02

1.05 ± 0.03

NS

HOMA-IR

3.0 + 0.3

4.1 + 0.4

3.1 ± 0.3

3.6 ± 0.3

< 0.05

Beta Cell Function

55 ± 1

33 ± 1

34 ± 1

51 ± 2

< 0.0001

Stern Score

8.3 ± 0.6

22.5 ± 1.4

16.1 ± 11

9.8 ± 0.9

< 0.0001

% MS

20

58

62

20

< 0.0001