Table 1 Correlations between the two KOOSJR (Knee disability and Osteoarthritis Outcome Score for Joint Replacement) scores, EQ-5D-5 L Index and VAS (Visual analog scale), knee society score (KSS1 – part1 knee score and KSS2 – part 2 function) and IKDC (International Knee Documentation Committee – subjective knee form)

KOOSJR1

1.000

.618^b

−.431^b

−.364^b

−.133

−.072

−.671^b

.

.000

.000

.000

.192

.485

.000

100

45

100

99

98

97

99

KOOSJR2

.618^b

1.000

−.563^b

−.438^b

.020

.131

−.484^b

.000

.

.000

.003

.898

.402

.001

45

46

45

45

44

43

45

Index

−.431^b

−.563^b

1.000

.556^b

.100

.255^a

.370^b

.000

.000

.

.000

.330

.012

.000

100

45

100

99

98

97

99

VAS

−.364^b

−.438^b

.556^b

1.000

.229^a

.249^a

.377^b

.000

.003

.000

.

.024

.014

.000

99

45

99

99

97

96

98

KSS1

−.133

.020

.100

.229^a

1.000

.359^b

.129

.192

.898

.330

.024

.

.000

.209

98

44

98

97

98

97

97

KSS2

−.072

.131

.255^a

.249^a

.359^b

1.000

.078

.485

.402

.012

.014

.000

.

.448

97

43

97

96

97

97

96

IKDC

−.671^b

−.484^b

.370^b

.377^b

.129

.078

1.000

.000

.001

.000

.000

.209

.448

.

99

45

99

98

97

96

99