Table 2.

Linear model of predictors of two-year change (∆) prior to knee replacement in minimum medial joint space width (∆mJSW) and medial fixed-location joint space width (∆medfJSW).

	b (95% CI)	SE b	β	p	r 2 (#)	cumulative adjusted r 2 (§)	p ANOVA (&)	AIC
∆mJSW (n=28, ♂= 9, ♀=19)
Step 1
Constant	-0.27 (-0.72, 0.17)	0.22		0.219
cMFTC	0.95 (0.56, 1.34)	0.19	0.70	0.000	0.49	0.47	0.000	74.53
Step 2
Constant	-0.14 (-0.57, 0.28)	0.21		0.494
cMFTC	0.65 (0.22, 1.09)	0.21	0.49	0.005	0.49
TA.Uncov [mm2]	-0.01 (-0.02, 0.00)	0.00	-0.38	0.023	0.43	0.56	0.023	70.59
Step 3
Constant	-3.05 (-5.91, -0.19)	1.39		0.038
cMFTC	0.60 (0.19, 1.01)	0.20	0.44	0.006	0.49
TA.Uncov [mm2]	-0.01 (-0.02, 0.00)	0.00	-0.35	0.025	0.43
Age	0.04 (0.00, 0.09)	0.02	0.26	0.045	0.18	0.61	0.045	67.80
∆medfJSW (n=29, ♂= 10, ♀=19)
Step 1
Constant	-0.46 (-0.86, -0.05)	0.12		0.030
cMFTC	0.90 (0.56, 1.34)	0.16	0.73	0.000	0.53	0.52	0.000	72.38
Step 2
Constant	-0.31 (-0.64, 0.02)	0.16		0.067
cMFTC	0.65 (0.38, 0.92)	0.13	0.53	0.000	0.53
Th.max	-0.55 (-0.88, -0.22)	0.16	-0.37	0.002	0.39	0.67	0.001	62.03
Wid.mean	0.43 (0.06, 0.79)	0.18	0.26	0.024	0.28	0.72	0.024	57.97
Step 3

Abbreviations: # … respective r² from bivariate correlation; § … cumulative adjusted r² from multiple linear stepwise regression (explained variance); b beta; CI confidence interval; SE standard error; β standardized beta; p … p-value; & … p-value from ANOVA from change in r²; AIC … Akaike information criterion; others see Table 1.