Table 2 Percentage (95 % CI) of participants with moderate/severe problems in the EQ-5D-3L attributes, mean (95 % CI) EQ-5D-3L index and KOOS scores in the full sample

 Mobility

11.5 (8.9 to 14.8)

32.6 (23.1 to 43.8)^a

52.2 (44.8 to 59.5)^ab

34.7 (25.4 to 45.5)^ac

 Self-care

0.2 (0.1 to 0.5)

2.7 (1.3 to 5.6)^a

7.3 (3.5 to 14.5)^a

3.6 (1.0 to 12.3)^a

 Usual activities

5.6 (3.9 to 8.0)

21.9 (14.3 to 32.0)^a

24.8 (20.1 to 30.3)^a

10.0 (5.1 to 18.7)^bc

 Pain/discomfort

35.9 (31.8 to 40.3)

88.1 (76.1 to 94.5)^a

96.7 (92.1 to 98.7)^ab

70.4 (60.1 to 78.9)^abc

 Anxiety/depression

17.5 (14.3 to 21.1)

30.2 (20.9 to 41.3)^a

32.2 (25.9 to 39.4)^a

21.4 (13.9 to 31.4)

No problem at any dimension (full health)

54.2 (50.0 to 58.6)

7.7 (2.9 to 19.0)^a

3.1 (1.2 to 7.8)^a

22.6 (15.2 to 32.2)^abc

Mean UK EQ-5D-3L index score

0.89 (0.87 to 0.90)

0.71 (0.67 to 0.75)^a

0.67 (0.64 to 0.69)^ab

0.77 (0.72 to 0.82)^abc

Mean Swedish EQ-5D-3L index score

0.93 (0.93 to 0.94)

0.87 (0.85 to 0.89)^a

0.84 (0.83 to 0.85)^ab

0.89 (0.87 to 0.91)^abc

 Pain

92.8 (91.8 to 93.8)

68.9 (64.3 to 73.4)^a

55.4 (52.9 to 57.8)^ab

81.4 (78.2 to 84.6)^abc

 Symptoms

66.1 (65.4 to 66.8)

56.7 (54.4 to 58.9)^a

48.2 (46.5 to 50.0)^ab

61.6 (59.5 to 63.8)^abc

 ADL

91.3 (90.1 to 92.6)

70.3 (65.6 to 74.9)^a

56.2 (53.1 to 59.3)^ab

80.1 (76.4 to 83.9)^abc

 QoL

86.4 (84.9 to 87.9)

56.9 (51.6 to 62.1)^a

40.1 (37.4 to 42.9)^ab

66.4 (61.9 to 70.8)^abc