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Table 4 Interclass correlations between raw mark and pass fail decision by decision method

From: Enhancing the defensibility of examiners’ marks in high stake OSCEs

Station

Traditional method

R2

(OBM2)

R2

Med.A

0.383

14.7%

0.497

24.7%

Med.B

0.400

16.0%

0.563

31.7%

Surg.A

0.372

13.8%

0.492

24.2%

Surg.B

0.313

9.8%

0.450

20.3%

Psych

0.446

19.9%

0.660

43.6%

O&G

0.588

34.6%

0.690

47.6%

P.Care

0.378

14.3%

0.546

29.8%

Paed

0.308

9.5%

0.428

18.3%

E.Med

0.426

18.1%

0.426

18.1%

  1. P < 01 for all correlations; N = 259
  2. (B) Marks calculated using OBM
  3. (P-) Marks calculated using the traditional method