Table 4. Evaluation of the patient's knee pain range of motion

	Laser acupuncture group (n=30)			Therapeutic ultrasound group (n=30)			p2
	Median (IQR)	Δ	p1	Median (IQR)	Δ	p1
Baseline	132.5 (130 – 140)			130 (130 – 140)
T1	135 (130 – 140)	0 (0 – 0)	0.250	132.5 (130 – 140)	0 (0 – 0)	1.000	0.955
T2	140 (130 – 140)	0 (-5 – 0)	0.004	132.5 (130 – 140)	0 (0 – 0)	0.750	0.026
T3	140 (135 – 140)	0 (-10 – 0)	<0.001	135 (130 – 140)	0 (0 – 0)	0.563	0.020
T4	140 (140 – 140)	-5 (-10 – 0)	<0.001	135 (130 – 140)	0 (0 – 0)	0.828	0.018

Δ: Within-group differences over time compared to baseline
p₁: Paired Wilcoxon test compares the change in each group over time with T0
p₂: Mann-Whitney test compares the change (Δ) between 2 groups at each time point
IQR: Interquartile range