TABLE 1

Clinical characteristics of the hyperglycemic clamp cohorts

The NetherlandsGermany (Tübingen)*
Hoorn*Utrecht*NTR twins*
n (NGT/IGT)137 (0/137)72 (60/12)120 (113/7)118 (83/35)
Sex (M/F)64/7317/5555/6551/67
Age (years)60.5 ± 8.746.6 ± 6.731.6 ± 6.439.2 ± 13.2
BMI (kg/m2)28.0 ± 4.025.9 ± 3.824.1 ± 3.525.5 ± 5.4
Fasting plasma glucose (mmol/l)6.3 ± 0.74.7 ± 0.54.6 ± 0.45.1 ± 0.7
2-h plasma glucose (mmol/l)8.8 ± 1.75.7 ± 1.65.4 ± 1.26.5 ± 2.0
Fasting plasma insulin (pmol/l)62 (46–91)36 (24–54)40 (26–47)43 (30–66)
  • Data are means ± SD or medians (interquartile range).

  • *Original population from which the cohort originated (21–26).