The relationship between functional levels and fear-avoidance beliefs following anterior cruciate ligament reconstruction

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 2 Results of the hierarchical linear regression analysis—the dependent variable was functional levels in activities of daily living and sports as measured by Knee Outcome Survey scores

Independent variable(s)	Parameter estimate	Standard error	P value**
Step 1
Knee surgery after initial ACLR	−33.06	5.43	<0.001
Time from ACLR to testing	0.47	0.15	<0.001
Adjusted R² = 0.48, P < 0.001*
Step 2
Knee surgery after initial ACLR	−30.99	5.46	<0.001
Time from ACLR to testing (months)	0.43	0.16	0.011
Single-leg hop index	0.99	0.47	0.048
Quadriceps peak torque index	0.03	0.21	0.87
KT-1000	−0.35	0.89	0.70
Adjusted R² = 0.49, P < 0.001*
Step 3
Knee surgery after initial ACLR	−24.78	5.11	<0.001
Time from ACLR to testing (months)	0.18	0.16	0.26
Single-leg hop index	0.34	0.47	0.73
Quadriceps peak torque index	−0.01	0.19	0.96
KT-1000	−0.14	0.79	0.86
FABQ	−1.96	0.54	<0.001
Adjusted R² = 0.61, P < 0.001*