Table 3.

Analysis of covariance (ANCOVA) “knee function” (R2=0.389).

	SSQa	df 1	F	P value	η 2	Partial η2
KOOSADLb score PREc	6890.216	1	63.479	<.001	0.186	0.234
Intervention	6391.123	1	67.002	<.001	0.173	0.221
Recruiter	983.384	6	1.256	.28	0.027	0.042
Pain medication	74.278	1	0.785	.38	0.002	0.003
Pain level	28.946	1	0.266	.61	0.001	0.001
Residual	22,584.157	—d	—	—	—	—

^aSSQ: sum of squares.

^bKOOS_ADL: Knee Injury and Osteoarthritis Outcome Score—Activities of Daily Living.

^cPRE: survey before the first therapy session.

^dNot applicable.