Table 3.

Spearman’s rank correlation (r_s) between each dimension and the EQ VAS score for pre- and postoperative patients for each version of the EQ-5D survey* as well as the 95% confidence interval (CI) for each

Dimension	Preoperative (n = 50)					Postoperative (n = 77)
	rs between 3L and VAS	95% CI	rs between 5L and VAS	95% CI	p value	rs between 3L and VAS	95% CI	rs between 5L and VAS	95% CI	p value
Mobility	−0.370	−0.588 to −0.102	−0.458	−0.652 to −0.205	0.616	−0.402	−0.575 to −0.196	−0.532	−0.676 to −0.350	0.318
Self-care	−0.185	−0.441 to 0.098	−0.358	−0.579 to −0.089	0.337	−0.179	−0.387 to 0.047	−0.406	−0.577 to −0.200	0.125
Usual activities	−0.349	−0.572 to −0.079	−0.501	−0.684 to −0.259	0.352	−0.429	−0.596 to −0.227	−0.420	−0.588 to −0.216	0.946
Pain/discomfort	−0.527	−0.703 to −0.292	−0.508	−0.689 to −0.268	0.902	−0.371	−0.550 to −0.161	−0.408	−0.579 to −0.202	0.782
Anxiety/depression	−0.283	−0.521 to −0.005	−0.524	−0.700 to −0.287	0.109	−0.349	−0.531 to −0.135	−0.300	−0.491 to −0.082	0.701

* The strength of the correlations was defined as: absent (r_s < 0.20), weak (0.20 ≤ r_s < 0.35), moderate (0.35 ≤ r_s < 0.50), or strong (r_s ≥ 0.50). Randomization tests (based on 10,000 permutations) for paired data were used to determine if the correlations were significantly different between the versions of the survey with significance at p ≤ 0.05; VAS = visual analog scale.