Table 1.

Response levels of the EQ-5D-3L and EQ-5D-5L

3L		5L
Level 1	No problems	Level 1	No problems
		Level 2	Slight problems
Level 2	Some/moderate problems	Level 3	Moderate problems
		Level 4	Severe problems
Level 3	Extreme problems/unable to	Level 5	Extreme problems/unable to

When expanding from the 3L to the 5L, some of the wording of response categories was changed. The most significant was that level 3 mobility of the 3L was changed from ‘confined to bed’ to ‘unable to walk about’ for level 5 of the 5L [24]