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Table 3 Agreement between actual components and estimated (using SF-12) components of EQ-5D-3L

From: Level of agreement between patient-reported EQ-5D responses and EQ-5D responses mapped from the SF-12 in an injury population

EQ-5D-3L items

% agreement

% under-estimated

% over-estimated

Kappa (95 % CI)

Test of symmetry

PABAK*(95 % CI)

6 months (n = 7504)

      

Mobility

73.7

16.2

10.1

0.44 (0.42, 0.47)

<0.001

0.61 (0.59, 0.62)

Self-care

83.8

11.7

4.5

0.18 (0.15, 0.21)

<0.001

0.76 (0.74, 0.77)

Usual activities

66.5

24.9

8.6

0.38 (0.36, 0.40)

<0.001

0.50 (0.48, 0.51)

Pain/discomfort

65.0

16.9

18.2

0.38 (0.36, 0.40)

<0.001

0.47 (0.46, 0.49)

Anxiety/depression

73.5

15.5

11.0

0.42 (0.41, 0.44)

<0.001

0.60 (0.59, 0.62)

12 months (n = 8722)

      

Mobility

76.6

13.7

9.8

0.47 (0.45, 0.49)

<0.001

0.65 (0.63, 0.66)

Self-care

86.1

10.0

3.9

0.19 (0.17, 0.22)

<0.001

0.79 (0.78, 0.80)

Usual activities

70.7

20.5

8.8

0.42 (0.40, 0.43)

<0.001

0.56 (0.55, 0.57)

Pain/discomfort

67.7

14.0

18.3

0.43 (0.41, 0.44)

<0.001

0.52 (0.50, 0.53)

Anxiety/depression

75.0

14.7

10.3

0.43 (0.41, 0.45)

<0.001

0.63 (0.61, 0.64)

  1. *Prevalence –adjusted Bias-adjusted Kappa