Table 3 Physical performance tests were used to discriminating osteoarthritic and normal participants by receiver operating curve analysis

40-m fast-paced walking

0.87

0.78 ~ 0.96

< 0.001

26.8

0.77

0.80

9-step stair-climbing test

0.94

0.87 ~ 1.00

< 0.001

15.5

0.90

0.93

30s chair stand test

0.76

0.63 ~ 0.88

0.001

9.8

0.50

1.00

6-minute walking test

0.84

0.73 ~ 0.97

< 0.001

421.5

0.73

0.90

Timed up and go

0.91

0.83 ~ 0.99

< 0.001

8.5

0.83

0.90