Table 1 The 5-item EQ-5D questionnaire (Source:[22])

Mobility

I have no problems in walking about

□

I have some problems in walking about

□

I am confined to bed

□

Self-care

I have no problems with self-care

□

I have some problems washing or dressing myself

□

I am unable to wash or dress myself

□

Usual activities (e.g. work, study, housework, family or leisure activities)

I have no problems with performing my usual activities

□

I have some problems with performing my usual activities

□

I am unable to perform my usual activities

□

Pain/discomfort

I have no pain or discomfort

□

I have moderate pain or discomfort

□

I have extreme pain or discomfort

□

Anxiety/depression

I am not anxious or depressed

□

I am moderately anxious or depressed

□

I am extremely anxious or depressed

□