Table 3 Inter-observer agreement subdivided by experience

Classification

Treatment

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.0315

(0.0000-0.0917)

slight

0.1605

(0.0190-0.3020)

slight

2D CT scan

0.233

(0.1096-0.3339)

fair

0.4673

(0.3294-0.6052)

moderate

3D reconstruction

0.3246

(0.1946-0.4546)

fair

0.1832

(0.0333-0.3330)

slight

General Orthopedists

Classification

Treatment

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.1079

(0.0467-.01691)

slight

0.3883

(0.3213-0.4553)

fair

2D CT scan

0.0351

(0.0000-0.0914)

slight

0.46

(0.3945-0.5255)

moderate

3D reconstruction

0.036

(0.0000-0.0980)

slight

0.4069

(0.3405-0.4734)

moderate

Senior Residents

Classification

Treatment

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.2184

(0.0760-0.3608)

fair

0.4273

(0.2849-0.5697)

moderate

2D CT scan

0.0597

(0.0000-0.2230)

slight

0.2613

(0.1133-0.4094)

fair

3D reconstruction

0.0364

(0.0000-0.1670)

slight

0.368

(0.2154-0.5210)

fair

Junior Residents

Classification

Treatment

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.0295

(0.0000-0.1807)

slight

0.029

(0.0000-0.1701)

slight

2D CT scan

0.1111

(0.0388-0.2610)

slight

0.1288

(0.0397-0.2973)

slight

3D reconstruction

0.1438

(0.0390-0.2915)

slight

0.2284

(0.0738-0.3831)

fair