Variable Valuea
Age (year) 52.4 ± 0.9
Body mass index (kg/m2) 23.8 ± 2.5
Leisure-time physical activity (MET-hours/week) 18 ± 18
Current smoking, n (%) 1072 (47.4)
Current alcohol use, n (%) 1892 (83.6)
Daily use of green tea, n (%) 1989 (87.9)
Daily use of coffee, n (%) 1473 (65.1)
Glucose tolerance status, n (%)  
Normal 1523 (67.3)
Impaired fasting glycemia 139 ( 6.1)
Impaired glucose tolerance 421 (18.6)
Type 2 diabetes 180 ( 8.0)
MET, metabolic equivalent.
aValues are mean ± SD unless otherwise specified.
Table 1: Characteristics of the study subjects (n=2263).
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