Table 1. Baseline characteristics of eligible study participants in the second visit.
| Variable | Mean/median | SD/IQR | No (n) |
| Age (years) (median) | 64 | 11 | 6505 |
| Waist circumference (cm) | 93.1 | 13.8 | 6497 |
| Age started smoking (years) (ex-smokers)* | 17.2 | 3.6 | 532 |
| Years smoked before quitting (ex-smokers)* | 22 | 12.1 | 532 |
| Age stopped smoking (years)* | 39.8 | 12.7 | 532 |
| Years of abstinence† | 23.4 | 13.5 | 532 |
| Age diabetes diagnosed** | 52.2 | 12.2 | 386 |
| Age hypertension diagnosed (years)* | 47.0 | 16.4 | 1979 |
| Systolic blood pressure (mm Hg) | 138 | 18.8 | 6081 |
| Diastolic blood pressure (mm Hg) | 83 | 10.2 | 6081 |
| Body mass index (BMI) (kg/m2) | 27.7 | 5 | 6485 |
| Urinary albumin concentration (mg/L) | 27.65 | 103 | 6505 |
| Serum creatinine (µg/dL) | 77.3 | 16 | 462 |
| HbA1c (mmol/mol, %) | 37.4 (5.6) | 7 | 4560 |
| Total cholesterol (mmol/l) | 5.6 | 1.2 | 5712 |
BMI – —Nnormal weight (20–25 kg/m2), overweight (25–30 kg/m2), obese (>30 kg/m2).
*
Obtained from the questionnaire, not verified.
†
Worked out from the date of the second visit and the date of quitting.
HbA1cglycosylated haemoglobin