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Table 1 Characteristics among 2855 participants according to status of OP

From: Relation between phalangeal bone mineral density and radiographic knee osteoarthritis: a cross-sectional study

Characteristics Status of OP P
Normal Osteopenia OP
N 1803 786 266 -
OA (%) 26.8 34.2 30.1 0.01
Age (years) 50.6 ± 6.3 54.4 ± 7.4 59.5 ± 6.8 <0.001
Female (%) 36.5 45.5 86.5 <0.001
BMI (kg/m2) 24.7 ± 3.4 24.3 ± 3.1 23.6 ± 3.1 <0.001
Overweight (%) 44.0 38.3 30.5 <0.001
Smoking (%) 28.1 25.2 7.9 <0.001
Alcohol drinking (%) 42.1 32.3 16.2 <0.001
Mean total energy intake (kcal/d) 1664.1 ± 774.2 1600.7 ± 732.4 1408.4 ± 546.6 <0.001
Mean Ca intake (kcal/d) 507.9 ± 346.0 492.6 ± 308.4 431.8 ± 253.8 <0.001
Ca supplementation (%) 24.3 28.4 47.0 <0.001
  1. N number, OA osteoarthritis, OP osteoporosis, BMI body mass index, Ca calcium