Table 8.

Main Outcome Variables Between Returned-to-Play and Did-Not-Return-to-Play Groups and Independent t Test Results (P Value, 95% Confidence Interval)

Outcome Variable	Group (Mean ± SD)		P Value	t Value	95% Confidence Interval
	Returned to Play	Did Not Return to Play
3 mo
Anterior Cruciate Ligament Return to Sport After Injury score	66.38 ± 19.05	60.47 ± 22.94	.36	0.92	−7.1, 18.8
Pediatric International Knee Documentation Committee self-reported questionnaire score	68.11 ± 14.41	70.99 ± 12.91	.53	−0.64	−11.9, 6.2
Limb Symmetry Index
Isometric extension	77.36 ± 18.07	68.13 ± 24.05	.15	1.47	−3.4, 21.9
Isometric flexion	69.50 ± 19.88	59.38 ± 20.10	.11	1.62	−2.5, 22.6
6 mo
Anterior Cruciate Ligament Return to Sport After Injury score	76.72 ± 16.49	68.41 ± 24.02	.17	1.37	−3.6, 20.3
Pediatric International Knee Documentation Committee self-reported questionnaire score	85.22 ± 14.45	79.93 ± 14.34	.23	1.25	−3.5, 14.1
Limb Symmetry Index
Isometric extension	93.37 ± 19.82	68.62 ± 21.08	.001a	3.91	12.0, 37.5
Isometric flexion	82.37 ± 13.88	73.15 ± 16.07	.049a	2.02	0.0, 18.3
Isokinetic extension at 60°/s	86.48 ± 13.66	81.78 ± 14.51	.38	0.89	−6.0, 15.4
Isokinetic extension at 180°/s	89.03 ± 14.04	76.33 ± 15.41	.03a	2.32	1.6, 23.8
Isokinetic extension at 300°/s	92.69 ± 17.40	69.33 ± 19.34	.002a	3.43	9.5, 37.2
Isokinetic flexion at 60°/s	91.79 ± 13.76	88.22 ± 12.63	.49	0.69	−6.9, 14.0
Isokinetic flexion at 180°/s	95.62 ± 17.01	89.67 ± 8.54	.32	1.01	−6.1, 17.9
Isokinetic flexion at 300°/s	98.28 ± 20.06	91.22 ± 26.27	.40	0.86	−9.6, 23.7

^aIndicates difference between group means (P ≤ .05).