Instrument

Missing data n = 391 (%)

Internal consistency (Cronbach’s α)

n = 261

Corrected item-total correlation n = 261

inter-item correlation

(lowest, mean)

n = 261

EQ-5D

0.73

Mobility

3 (0.8)

0.67^#

0.53

0.27, 0.38

Self-care

3 (0.8)

0.68^#

0.53

0.29, 0.39

Usual activities

3 (0.8)

0.68^#

0.52

0.25, 0.39

Pain/discomfort

5 (1.3)

0.67^#

0.53

0.35, 0.38

Anxiety/depression

6 (1.5)

0.73^#

0.39

0.25, 0.29

ADDQoL^**

0.93

Leisure activities

9 (2.3)

0.92^#

0.62

0.09, 0.43

Working life^*

231 (59.1)

Journeys

9 (2.3)

0.92^#

0.64

0.00, 0.45

Holidays

107 (27.4)

0.92^#

0.61

0.13, 0.42

Physical health

12 (3.1)

0.92^#

0.64

−0.05, 0.44

Family life

13 (3.3)

0.92^#

0.69

0.17, 0.47

Friendship and social life

8 (2.0)

0.92^#

0.77

0.08, 0.53

Personal relationship

81 (20.7)

0.92^#

0.71

0.09, 0.49

Sex life^*

144 (36.8)

Physical appearance

13 (3.3)

0.92^#

0.75

0.11, 0.51

Self-confidence

9 (2.3)

0.92^#

0.80

0.10, 0.54

Motivation

8 (2.0)

0.92^#

0.73

0.22, 0.50

People’s reaction

9 (2.3)

0.93^#

0.53

0.01, 0.37

Feelings about future

9 (2.3)

0.92^#

0.67

0.22, 0.45

Financial situation

11 (2.8)

0.92^#

0.64

0.10, 0.44

Living conditions

10 (2.6)

0.92^#

0.73

0.16, 0.49

Dependence on others

9 (2.3)

0.92^#

0.61

0.05, 0.43

Freedom to eat

7 (1.8)

0.93^#

0.49

0.12, 0.33

Freedom to drink

3 (0.8)

0.93^#

0.19

−0.05, 0.13