Table 3 Characteristics of the study subjects

Total

n = 277

n = 284

Age

53.7 ± 13.9

55.2 ± 11.0

30–39 years

n = 56

n = 52

40–49 years

n = 61

n = 62

50–59 years

n = 53

n = 50

60–69 years

n = 55

n = 57

70–79 years

n = 52

n = 63

Height: means ± SD (cm)

158.6 ± 7.1

168.4 ± 5.5

Weight: means ± SD (kg)

56.7 ± 9.2

66.9 ± 11.2

Body mass index: means ±SD (kg/cm²)

22.5 ± 3.0

23.6 ± 3.2

Kellgren–Lawrence OA scale

KL0/1/2/3/4

231/23/8/6/9

266/9/5/3/1