Table 1 Mean (± standard deviation) for KOOS subscales in men, women, and by KL grade

All subjects

62.41 ± 1.66

58.99 ± 1.70

65.48 ± 1.87

35.88 ± 2.46

49.49 ± 2.28

KL 2

65.65 ± 1.65

61.48 ± 1.88

67.47 ± 1.97

40.95 ± 2.58

52.01 ± 2.39

KL 3

62.37 ± 1.69

59.12 ± 1.69

65.41 ± 1.93

35.70 ± 2.49

49.20 ± 2.35

KL 4

59.00 ± 1.59

56.21 ± 1.47

63.44 ± 1.66

30.70 ± 2.18

47.14 ± 2.07

Women

61.70 ± 1.63

58.11 ± 1.69

64.60 ± 1.92

35.74 ± 2.50

50.17 ± 2.29

Men

63.48 ± 1.72

60.35 ± 1.71

66.83 ± 1.78

36.10 ± 2.39

48.44 ± 2.27