Table 2. Patient’s characteristic

	Total (n=60)	Laser acupuncture group (n=30)	Therapeutic ultrasound group (n=30)	P
Female, n (%)	10 (16.7)	8 (26.7)	2 (6.7)	0.080#
Age
median (IQR)	64.5 (59 – 70)	60.5 (58 – 68)	68 (60 – 71)	0.059*
Age group, n (%)
≤60 age	24 (40.0)	15 (50.0)	9 (30.0)	0.187#
>60 age	36 (60.0)	15 (50.0)	21 (70.0)
Career, n (%)
Manual labor	24 (40.0)	13 (43.3)	11 (36.7)	0.792#
No manual labor	36 (60.0)	17 (56.7)	19 (63.3)
VAS, median (IQR)		6 (5 – 6)	5 (5 – 6)	0.284*
ROM, median (IQR)
Left knee		132.5 (130 – 140)	130 (130 – 140)	0.852*
Right knee		135 (130 – 140)	135 (130 – 140)	0.795*

Mann-Whitney test
Fisher’s test
IQR: Interquartile range