How much improvement can satisfy patients? Exploring patients’ satisfaction 3 years after total knee arthroplasty

Table 5 Multivariable logistic regression model results for patients’ satisfaction

Satisfaction	Odds ratio	Std. err.	z	P	95% conf. interval
Duration	0.993774	0.0201667	− 0.31	0.758	0.9550237–1.034097
Sex	1.299435	0.602238	0.57	0.572	0.5239084–3.22295
Age^a	1.223833	0.0410019	6.03	0.000	1.146052–1.306892
BMI^b	0.9811767	0.0556674	− 0.33	0.738	0.8779181–1.09658
Depression	1.531385	1.434111	0.46	0.649	0.2443158–9.598804
HSS change	1.059726	0.031152	1.97	0.047	1.000395–1.122576
NRS-Walking change	2.802223	0 .454463	6.35	0.000	2.039178–3.850792
Pre-mJSW^c	4.609576	1.873051	3.76	0.000	2.078665–10.22204

^aAge was calculated as binary variable according to age > 65 or ≤ 65 at baseline
^bBMI (body mass index) was calculated as binary variable according to BMI ≥ 25 kg/m² or < 25 kg/m² at baseline
^cPre-mJSW (minimum joint space width) was calculated as binary variable according to pre-mJSW< 2 mm or ≥ 2 mm at baseline

ISSN: 1749-799X