Skip to main content

Table 4 Inter-rater agreement, surgeon vs. RC1 (1st abstraction) and RC2

From: Reliability of medical record abstraction by non-physicians for orthopedic research

 

Data elements

Kappa

95% CI

% Agreement

RC1

Index knee

1.00

(1.00, 1.00)

100

Bilateral operation

1.00

(1.00, 1.00)

100

Arthroplasty approach type

0.59

(0.19, 0.99)

97.3

Cement fixation

0

(0.00, 0.00)

98.6

Lateral release type

0.93

(0.83, 1.00)

97.3

Posterior cruciate ligament recession

0.86

(0.74, 0.99)

94.5

Knee alignment

0.80

(0.68, 0.92)

89.2

Knee predominant compartment

0.66

(0.51, 0.81)

82.4

RC2

Index knee

1.00

(1.00, 1.00)

100

Bilateral operation

1.00

(1.00, 1.00)

100

Arthroplasty approach type

0.49

(0.00, 1.00)

97.3

Cement fixation

0

(0.00, 0.00)

98.5

Lateral release type

0.68

(0.50, 0.85)

86.3

Posterior cruciate ligament recession

0.74

(0.57, 0.90)

88.9

Knee alignment

0.53

(0.39, 0.66)

70.4

Knee predominant compartment

0.53

(0.37, 0.69)

74.6