Table 1

Characteristics of study population by concentration of glycated haemoglobin and self reported diabetes. Values are mean (SD) unless stated otherwise

Glycated haemoglobin (%)
<5 (n=1204)5-5.4 (n=1606)5.5-6.9 (n=1611)≥7 (n=81)Self reported diabetes (n=160)
Age (years)57.5 (8.6)58.8 (9.0)61.1 (8.5)64.0 (7.9)64.4 (7.4)
HbA1c (%)4.57 (0.34)5.20 (0.14)5.82 (0.31)8.35 (1.52)7.98 (1.87)
Body mass index (kg/m2)26.2 (3.0)26.5 (3.2)26.8 (3.5)28.6 (3.4)27.7 (3.8)
Systolic blood pressure (mm Hg)136.3 (16.7)136.9 (16.8)138.4 (17.7)143.8 (16.0)143.4 (19.3)
Diastolic blood pressure (mm Hg)84.8 (10.6)84.7 (10.9)85.2 (11.1)87.3 (10.2)86.2 (12.5)
Cholesterol (mmol/l)5.88 (1.07)6.01 (1.04)6.11 (1.10)6.22 (1.04)5.9 (1.21)
LDL cholesterol (mmol/l)3.81 (0.94)3.89 (0.95)3.95 (0.94)3.90 (0.93)3.65 (10.2)
HDL cholesterol (mmol/l)1.26 (0.34)1.26 (0.36)1.24 (0.33)1.10 (0.28)1.15 (0.28)
Triglycerides (mmol/l)1.91 (1.08)2.00 (1.12)2.14 (1.27)2.80 (1.78)2.60 (1.78)
Cigarette smoking habit (No (%))
Never476 (39.8)564 (35.4)448 (27.9)21 (25.9)31 (19.5)
Former620 (51.8)860 (54.0)881 (55.0)50 (61.7)116 (73.0)
Current100 (8.4)168 (10.6)274 (17.1)10 (12.3)12 (7.5)
No (%) with history of heart attack or stroke50 (4.2)89 (5.5)142 (8.8)15 (18.5)32 (20.0)
  • P<0.001 for differences between categories for all variables except diastolic blood pressure.