Observer 1 × Observer 2

ICC

CI 95%

p value

Preoperative of M1

resident doctor × improvement in knee surgery

0.98

0.96 - 0.98

<0.0001

resident doctor × surg. > 10 years

0.92

0.88 - 0.94

<0.0001

resident doctor × surg. < 10 years

0.94

0.91 - 0.96

<0.0001

improvement in knee surgery × surg. > 10 years

0.90

0.85 - 0.94

<0.0001

improvement in knee surgery × surg. < 10 years

0.93

0.90 - 0.96

<0.0001

>10 years × < 10 years

0.87

0.80 - 0.91

<0.0001

Preoperative of M2

resident doctor × improvement in knee surgery

0.94

0.91 - 0.96

<0.0001

resident doctor × surg. > 10 years

0.92

0.88 - 0.94

<0.0001

resident doctor × surg. < 10 years

0.84

0.77 - 0.89

<0.0001

improvement in knee surgery × surg. > 10 years

0.90

0.85 - 0.93

<0.0001

improvement in knee surgery × surg. < 10 years

0.83

0.76 - 0.88

<0.0001

>10 years × < 10 years

0.90

0.86 - 0.93

<0.0001