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Table 4 Logistic regression analysis to determine the association between single-leg hop performance and return-to-sports status

From: Single-leg hop distance normalized to body height is associated with the return to sports after anterior cruciate ligament reconstruction

Logistic regression analysis

P-value

Odds ratio

95% Confidence interval

Independent Variable

Lower

Upper

Model 1

 The LSI of the SLHD

0.556

0.975

0.896

1.061

 SLHD on the operated side (%body height) cut-off 70%

0.013

3.980

1.338

11.840

Model χ2 test, P = 0.015; Hosmer‒Lemeshow test, P = 0.248.

Percentage of correct classification, 68.5%

Model 2

 Age

0.390

1.054

0.935

1.188

 Sex

0.300

3.022

0.374

24.420

 Body weight

0.725

1.011

0.950

1.077

 Postoperative months

0.557

0.990

0.957

1.024

 TSK

0.014

1.173

1.033

1.331

 SLHD on the operated side (%body height) cut-off 70%

0.013

9.602

1.598

57.689

 Ext 180 LSI

0.244

0.958

0.890

1.030

Model χ2 test, P < 0.001; Hosmer‒Lemeshow test, P = 0.390.

Percentage of correct classification, 78.1%

  1. LSI limb symmetry index, SLHD single-leg hop distance, TSK Tampa scale for kinesiophobia
  2. Ext 180 represents the isokinetic knee extension torque at 180°/s