TABLE 3.

Smuap area per force models

	B-Coefficient	Std. Error	P-Value
(Intercept)	1.731	0.074	<.0001
Kellgren & Lawrence Grade Main Effect
Grade 1	0.199	0.107	0.0718
Grade 2	−0.015	0.073	0.8321
Grade 3	−0.037	0.040	0.3632
Grade 4	0.021	0.042	0.6098
Percent (%) MVIC Main Effect
20%	−0.162	0.022	<.0001
30%	−0.111	0.010	<.0001
50%	−0.089	0.006	<.0001
Interactive Effects Between KL Grade and % MVIC
KL Grade 1
20%	0.003	0.033	0.9123
30%	−0.011	0.151	0.4531
50%	−0.018	0.009	0.0545
KL Grade 2
20%	−0.012	0.018	0.5178
30%	0.005	0.009	0.5423
50%	−0.000	0.006	0.9715
KL Grade 3
20%	0.000	0.110	0.9466
30%	0.000	0.005	0.9429
50%	0.005	0.003	0.1365
KL Grade 4
20%	−0.017	0.015	0.2585
30%	−0.006	0.006	0.3568
50%	−0.014	0.004	0.0004