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. 2015 Mar 26;10(3):e0121729. doi: 10.1371/journal.pone.0121729

Table 1. Description of baseline characteristics in 439 men.

% (N) or mean (SD) or median (IQR)
Age in years: mean (SD) 46.4 (4.2)
Educational level: % (N)
     Low 22.5 (98)
     Medium 65.5 (285)
     High 12.0 (52)
Occupational class: % (N)
     White-collar 75.2 (330)
     Blue-collar 24.8 (109)
Current smoker: % (N) 41.9 (184)
Body mass index (kg/m²): mean (SD) 25.3 (2.7)
Weight group: % (N)
     Normal weight (BMI<25kg/m²) 45.8 (201)
     Overweight (25kg/m²≤BMI<30kg/m²) 49.9 (219)
     Obesity (BMI≥30kg/m²) 4.3 (19)
Systolic blood pressure (mmHg): mean (SD) 132.2 (13.5)
Diastolic blood pressure (mmHg): mean (SD) 81.9 (10.6)
Total cholesterol (mg/dl): mean (SD) 234.7 (33.6)
HDL cholesterol (mg/dl): mean (SD) 54.7 (14.3)
Cardiorespiratory fitness (watts/kg): mean (SD) 1.46 (0.27)
Occupational physical activity: median kcal/working hour (IQR) 1,567 (1,221–2,184)
Groups of occupational physical activity: median kcal/working hour (IQR)
     Low (n = 147; 33.5%) 1,114 (1,023–1,222)
     Medium (n = 145; 33.0%) 1,567 (1,435–1,814)
     High (n = 147; 33.5%) 2,484 (2,184–2,940)
Heavy leisure time physical activity: median total kcal in last 3 months (IQR) 1,080 (0–5,280)
Groups of heavy leisure time physical activity: median total kcal in last 3 months (IQR)
     Low (n = 183; 41.7%) 0 (0–0)
     Medium (n = 123; 28.0%) 1,584 (1,056–2,560)
     High (n = 133; 30.3%) 7,920 (5,760–13,524)
Resting clinical heart rate: mean beats/min (SD) 69.7 (11.1)
Groups of resting clinical heart rate: mean beats/min (SD)
     Low (n = 141; 32.1%) 58.1 (4.4)
     Medium (n = 152; 34.6%) 68.5 (2.7)
     High (n = 146; 33.3%) 82.1 (7.7)
Ambulatory 24-hour heart rate: mean beats/min (SD) 81.8 (8.9)
Groups of ambulatory 24-hour heart rate: mean beats/min (SD)
     Low (n = 146; 33.3%) 72.3 (4.8)
     Medium (n = 146; 33.3%) 81.8 (2.0)
     High (n = 147; 33.5%) 91.1 (5.6)

SD, standard deviation; BMI, body mass index; IQR, inter-quartile range.