Table 4.

Prerehabilitation and Postrehabilitation Self-Reported Subjective Function and Cohen d Effect Sizes With 95% CIs

Patient-Reported Outcome Measure	Group, Mean ± SD				P Value			Pooled Prerehabilitation- Postrehabilitation Cohen d Effect Size (95% CI)a
	Patterned Electrical Neuromuscular Stimulation		Sham
	Prerehabilitation	Postrehabilitation	Prerehabilitation	Postrehabilitation	Time Main Effect	Group Main Effect	Group × Time Interaction
Visual analog scale-current pain in the last week score	0.8 ± 0.8	0.5 ± 0.6	1.8 ± 2.0	0.7 ± 0.6	.03b	.16	.14	−0.58 (−1.21, 0.04)
Visual analog scale-worst pain in the last week score	4.2 ± 1.1	1.9 ± 2.0	5.6 ± 1.2	2.2 ± 1.2	<.001b	.09	.39	1.92 (1.17, 2.67)
Anterior Knee Pain Scale score	80.4 ± 5.0	87.2 ± 9.7	73.1 ± 7.9	87.0 ± 5.6	<.001b	.20	.05	1.40 (0.74, 2.11,)
Activities of Daily Living Scale score	79.1 ± 8.5	88.6 ± 5.9	79.6 ± 12.0	87.3 ± 5.2	.002b	.80	.81	1.07 (0.42, 1.73)
Fear-Avoidance Beliefs Questionnaire-Knee score	12.4 ± 5.3	8.6 ± 5.2	14.4 ± 3.6	11.4 ± 3.8	.005b	.19	.71	−0.73 (−1.36, −0.09)
Lower Extremity Functional Scale score	67.0 ± 5.9	72.7 ± 4.9	64.2 ± 10.7	73.5 ± 4.6	<.001b	.71	.28	1.09 (0.43, 1.75)
Global rating of change score		4.6 ± 1.8		4.2 ± 1.8		.63

Abbreviation: CI, confidence interval.

^aEffect sizes were calculated to compare the pooled group's prerehabilitation and postrehabilitation scores; a positive value denotes an increase in subjective function postrehabilitation.

^bIndicates difference (P ≤ .05).