. Author manuscript; available in PMC: 2020 Mar 1.

Published in final edited form as: Knee. 2019 Feb 14;26(2):355–363. doi: 10.1016/j.knee.2019.01.011

Table 4.

Multivariable Regression Results for 2-Year Post-RTS KOOS Scores

	Predictor Variables	Beta Coefficients (95% CI)	P Value	Model R² Value
2-Year KOOS-Pain	-Graft Type (1=PT, 0=HS)	−3.10 (−6.10, −0.10)	0.043	13.9%
2-Year KOOS-Pain	-Involved limb hip abduction strength	−8.86 (−17.45, −0.27)	0.043	13.9%
2-Year KOOS-Symptoms	Model 1: -Graft Type (1=PT, 0=HS)	−7.78 (−13.67, −1.89)	0.011	14.3%
	-Isokinetic QF LSI at 300°/second	0.34 (0.09, 0.59)	0.008	14.3%
	Model 2: -Graft Type (1=PT, 0=HS)	−5.01 (−10.41, 0.39)	0.068	10.9%
	-Involved limb isokinetic QF peak torque at 300°/second	17.60 (1.63, 33.56)	0.031	10.9%
2-Year KOOS-ADL	-Graft Type (1=PT, 0=HS)	−1.83 (−3.85, 0.18)	0.074	12.5%
2-Year KOOS-ADL	-Involved limb hip abduction strength	−5.94 (−11.72, −0.17)	0.044	12.5%
2-Year KOOS-QOL	-Graft Type (1=PT, 0=HS)	−9.11 (−16.70, −1.52)	0.019	8.8%

RTS – return-to-sport; KOOS – Knee Injury and Osteoarthritis Outcome Score; ADL – activities of daily living; QOL – quality of life; CI – confidence interval; PT – patellar tendon; HS – hamstring; QF – quadriceps femoris; LSI – limb symmetry index