The effect of a digital-assisted group rehabilitation on clinical and functional outcomes after total hip and knee arthroplasty—a prospective randomized controlled pilot study

Table 4 Therapy-related group differences after total hip/knee arthroplasty with number of therapy session as additional covariate

Outcome Measures	Follow-up	n (IG—CG)	IG	CG	Diff. (95% CI)	p	η_p²	Power
EQ-5D Index	6-months	11—10	85.71 ± 30.66	66.32 ± 31.51	19.39 (-17.75 – 56.53)	0.278	0.097	0.282
EQ-5D health status (%)	6-months	11—10	82.92 ± 4.25	68.69 ± 4.57	14.24 (-2.78 – 31.25)	0.093	0.217	0.601
WOMAC pain	6-months	10—10	2.93 ± 4.55	6.27 ± 4.55	-3.34 (-8.93 – 2.24)	0.215	0.136	0.387
WOMAC stiffness	6-months	10—10	2.51 ± 2.47	3.10 ± 2.47	-0.59 (-3.63 – 2.45)	0.677	0.016	0.084
WOMAC function	6-months	10—10	13.63 ± 17.75	20.87 ± 17.75	-7.23 (-29.05 – 14.58)	0.481	0.046	0.153
STS (rep)	6-months	11—10	10.45 ± 2.30	10.50 ± 2.48	-0.05 (-9.30 – 9.19)	0.990	0.000	n/a
TUG (s)	6-months	11—10	8.62 ± 1.26	9.25 ± 1.36	-0.63 (-5.67 – 4.42)	0.792	0.006	0.062
gait velocity (m/s)	6-months	11—10	1.42 ± 0.35	1.27 ± 0.36	0.16 (-0.27 – 0.58)	0.439	0.051	0.165
step length (cm)	6-months	11—10	70.04 ± 8.80	65.35 ± 9.04	4.69 (-5.97 – 15.35)	0.357	0.071	0.215
gait velocity_CV (%)	6-months	11—10	4.10 ± 1.40	2.30 ± 1.44	1.80 (0.11 – 3.49)	0.039*	0.309	0.803
step length_CV (%)	6-months	11—10	3.93 ± 2.21	4.33 ± 2.27	-0.40 (-3.07 – 2.28)	0.752	0.009	0.069

Values for each group are shown as adjusted means ± standard deviations; n: sample size; IG: intervention group; CG: control group; Diff. (95% CI): mean difference between groups (95% confidence interval); EQ-5D: EuroQol-5Dimensions; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index; STS: 30 s sit to stand test; TUG: timed up and go test; CV: coefficient of variation; rep: repetitions; * p ≤ 0.05; medium (η_p² ≥ 0.06) and large effect sizes (η_p² ≥ 0.14) indicated by bold text

ISSN: 1471-2474