Table 2 Characteristics among 2855 participants according to status of OA

N

2022

833

-

OP (%)

9.2

9.6

0.74

Age (years)

51.4 ± 6.7

55.1 ± 7.8

<0.001

Female (%)

44.3

42.0

0.26

BMI (kg/m²)

24.5 ± 3.2

24.5 ± 3.2

0.87

Overweight (%)

40.8

42.0

0.55

Smoking (%)

25.6

24.8

0.67

Alcohol drinking (%)

37.4

36.0

0.49

Mean total energy intake (kcal/d)

1628.1 ± 725.2

1610.1 ± 800.3

0.64

Mean Ca intake (kcal/d)

498.9 ± 342.2

490.9 ± 294.5

0.82

Ca supplementation (%)

26.3

30.6

0.02