Table 1 Participant characteristics

Age (years)

75.0

2.5

75.2

2.6

0.39

Height (cm)

173.0

6.5

158.9

6.0

<0.001

Weight (Kg)¹

81.5

1.1

73.7

1.2

<0.001

BMI (kg/m²)¹

27.1

1.1

27.1

1.2

0.26

N

%

N

%

Smoker status

  Never smoked

80

40.2

125

63.8

  Current/Ex-smoker

119

59.8

71

36.2

<0.001

Consumes alcohol (yes)

187

94.0

134

68.4

<0.001

Education

  Primary or less

40

20.1

38

19.4

  Secondary

101

50.8

84

42.9

  College and/or University

58

29.1

74

37.8

0.17

  0

56

28.1

43

21.9

  1

67

33.7

70

35.7

  2

62

31.2

70

35.7

  3

12

6.0

12

6.1

  4

2

1.0

1

0.5

0.64

Radiographic OA (yes)

76

38.2

83

42.3

0.40

Clinical Knee OA (yes)

23

11.6

36

18.4

0.06

Self-reported knee OA (yes)

31

15.6

41

20.9

0.17