Table 1.

MCID: cut-off points and clinically irrelevant and important changes 12 months post-procedure

Outcome variable	Cut-off used	N	Clinically irrelevant (%)	Clinically important (%)
VAS back pain improvement	1.2	153	70 (45.8)	83 (54.2)
VAS leg pain improvement	1.6	153	58 (37.9)	95 (62.1)
ZCQ symptom severity	0.48	155	62 (40.0)	93 (60.0)
ZCQ physical function	0.52	153	65 (42.5)	88 (57.5)
EQ5D	0.08	155	55 (35.5)	100 (64.5)

EQ5D EuroQoL-5 Dimensions (quality-of-life scale), MCID Minimum Clinically Important Difference [7, 9]; ZCQ Zurich Claudication Questionnaire