Skip to main content

Table 1 General characteristics of the study subjects (n = 2,073)

From: Risk factors for bone mineral density at the calcaneus in 40–59 year-old male workers: A cross-sectional study in Korea

Variables Mean ± SD
Age(year) 47.1 ± 4.8
Height(cm) 169.5 ± 5.4
Weight(kg) 69.6 ± 8.4
BMI(kg/m2) 24.2 ± 2.5
Body fat(%) 21.3 ± 4.2
Waist hip ratio 0.9 ± 0.1
Bone mineral density (g/cm2) 0.60 ± 0.09
Education level (year)  
   ≤ 12 884 (42.6)
   >12 1,189 (57.4)
Smoking status  
   never-smoker 473 (22.8)
   ever-smoker 1,600 (77.2)
Drinking status  
   never-drinker 191 (9.2)
   ever-drinker 1882 (90.8)
Physical activity (time/week)  
   ≤ 2 1,038 (50.1)
   ≥ 3 1,035 (49.9)
Bone mineral density grouping(n(%))*  
   normal group 1,539 (74.2)
   osteopenia 472 (22.8)
   osteoporosis 62 (3.0)
  1. * Bone mineral density grouping: according to diagnostic criteria of WHO, normal group; T-score ≥ -1.0, osteopenia; -2.5 ≤ T-score < -1.0, osteoporosis; T-score < -2.5
  2. n(%)