Surgically modifiable factors measured by computer-navigation together with patient-specific factors predict knee society score after total knee arthroplasty

Table 4 Multiple regression models for 4-years KSS-F scores

	Dependent variable	Step	Predictors included	Predictors excluded	R²	Adj. R²	F	p*	B	p**
1^st Model (only SMF)	4-years KSS-F	1	All six		0.20	0.12	2.6	0.02
		2		FOClat	0.20	0.13	3.1	0.01
		3	FJLCmin	FJLCmax	0.18	0.13	3.7	0.009	1.7	0.02
			TCS						2.8	0.04
			FGDM-L						3.7	0.03
			FOCmed						-1.3	0.05
2^nd Model (only PSF)	4-years KSS-F	1	All four		0.11	0.07	11.4	0.04
		2		BMI	0.11	0.08	3.5	0.01
		3	Age	Pre-OP KSS-F	0.11	0.08	5.1	0.008	-0.2	0.04
			Body Weight						-0.6	0.03
3^rd Model (combination of PSF and SMF)	4-years KSS-F	1	BMI		0.20	0.14	3.4	0.007	-0.7	0.02
			Age						-0.7	0.001
			Pre-OP KSS-F						0.04	0.5
			TCS						2.2	0.1
			FOCmed						-0.7	0.2

p* = Statistical significance of the model; B = Unstandardized Coefficients; p** = Statistical significance of the predictors included in the final model
Significant p-values in bold; SMF Surgically modifiable factors, PSF Patient-specific factors

ISSN: 1471-2474