Relationship between biological factors and catastrophizing and clinical outcomes for female patients with knee osteoarthritis

Table 2 Comparison of each outcome between unilateral and bilateral knee osteoarthritis

Variables	Unilateral (n = 17)	Bilateral (n = 60)	P-value
Pain rating (VAS)	24 (0-95)	26 (0-99)	0.51
TUG (s)	5.5 (4.4-7.2)	6.3 (4.1-16.5)	0.02
JKOM	13 (2-35)	18 (1-81)	0.23

Data are shown as the median (range). The Mann-Whitney U test was used to compare differences between two groups. VAS: Visual analogue scale; TUG: Timed up and go test; JKOM: Japanese Knee Osteoarthritis Measure.