Table 3.

Multiavvriable-adjusted association of BMI, comorbidity, gender and age with dependence on walking aids

	2-year primary TKA				5--year primary TKA
	Some dependence (n=161/3,063)	p-value	Complete Dependence/ unable (n=113/2,063)	p-value	Some dependence (n=113/1,879)	p-value	Complete Dependence/ unable (n=128/1,879)	p-value
BMI (Ref, <25 kg/m2)
25–29.9	0.8 (0.5,1.3)	0.38	1.1 (0.6,2.1)	0.75	0.6 (0.4,1.1)	0.13	0.9 (0.4,1.6)	0.63
30–34.9	1.2 (0.7,2.0)	0.59	0.7 (0.4,1.5)	0.41	0.8 (0.4,1.5)	0.46	1.1 (0.5,2.1)	0.86
35–39.9	1.2 (0.6,2.2)	0.62	1.7 (0.8,3.6)	0.13	1.2 (0.6,2.3)	0.64	1.0 (0.5,2.3)	0.92
≥40	1.9 (0.9,3.8)	0.07	1.6 (0.7,3.6)	0.28	1.7 (0.8,3.8)	0.19	2.0 (0.8,4.7)	0.12
Deyo-Charlson index (5-point change)	1.6 (1.1,2.3)	<0.01	2.3 (1.5,3.3)	<0.01	1.1 (0.7,1.7)	0.74	2.1 (1.4,3.2)	<0.01
Female Gender (Ref, Male)	1.3 (0.9,1.9)	0.11	2.4 (1.5,3.9)	<0.01	1.5 (1.0,2.3)	0.05	1.7 (1.1,2.6)	0.02
Age (Ref, ≤60 yrs)
61–70	2.8 (1.3,5.9)	<.01	0.5 (0.3,1.0)	0.05	1.3 (0.6,2.7)	0.44	0.5 (0.3,1.0)	0.07
71–80	4.3 (2.0,9.2)	<.01	1.4 (0.8,2.6)	0.23	2.9 (1.4,5.8)	<.01	1.5 (0.8,2.8)	0.24
>80	13.2 (5.7,30.3)	<.01	3.2 (1.6,6.7)	<.01	7.7 (3.3,17.8)	<.01	5.1 (2.3,11.0)	<.01

^*P<0.05;

^‡p≤0.01,

^†p≤0.001; All other p-values are ≥0.05, unless indicated as above; Significant odds ratios are in bold

^aMultivariable model adjusted for: gender, age, Deyo-Charlson index, BMI, ASA score, distance from medical center, operative diagnosis, type of implant (cemented, uncemented, hybrid), income category and pre-operative overall limitations