Table 3.

A comparison of magnesium and titanium patient groups pre-surgery (Pre), post-surgery (Post), and the changes between pre- and post-surgery (Post-pre) for each dimension and index for the Manchester-Oxford Foot Questionnaire (MOXFQ), the Foot and Ankle Outcome Index (FAOI) and quality of life (EQ-5D-3 L)

Score / domain	Comparison	Med diff pre – post	P
MOXFQ
Walking/standing	Pre	−14.29 (− 25.00 – − 3.57)	0.008
	Post	0.00 (−3.57–3.57)	0.874
	Post-pre	14.28 (7.14–21.43)	0.001
Foot pain	Pre	−10.00 (−20.00 – − 5.00)	0.015
	Post	-5.00 (−15.00–0.00)	0.088
	Post-pre	5.00 (0.00–10.00)	0.114
Social interaction	Pre	−6.25 (−18.75–6.25)	0.283
	Post	0.00 (0.00–0.00)	0.416
	Post-pre	6.25 (0.00–18.75)	0.068
Index	Pre	−11.13 (− 19.76 – −0.77)	0.036
	Post	−0.48 (−6.19–2.38)	0.653
	Post-pre	8.63 (3.15–14.17)	0.008
FAOI
Core scale	Pre	2.42 (−1.75 – −6.17)	0.229
	Post	−1.75 (−3.25–0.50)	0.099
	Post-pre	−3.42 (−6.67 – −0.08)	0.036
Core scale normative	Pre	1.96 (−1.42–5.00)	0.229
	Post	−1.42 (−2.64–0.41)	0.099
	Post-pre	−2.77 (−5.41 – −0.07)	0.038
Shoe comfort scale	Pre	0.00 (−15.00–10.00)	0.943
	Post	0.00 (−10.00–10.00)	0.939
	Post-pre	0.00 (−10.00–25.00)	0.931
Shoe normative	Pre	0.00 (−5.08–3.39)	0.943
	Post	0.00 (−3.39–3.39)	0.939
	Post-pre	0.00 (−3.39–8.47)	0.904
EQ-5D-3 L
Index	Pre	0.052 (0.00–0.20)	0.233
	Post	0.00 (0.00–0.00)	0.252
	Post-pre	−0.16 (−0.20–0.00)	0.079
VAS	Pre	3.00 (−7.00–11.00)	0.667
	Post	0.00 (−5.00–10.00)	0.931
	Post-pre	0.00 (−5.00–6.00)	0.877

Med diff: difference of medians plus 95% Hodges-Lehmann confidence interval; p p-value from Wilcoxon test for independent samples