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Table 2 Examiner perceptions of intervals between global scoring domains

From: Is the assumption of equal distances between global assessment categories used in borderline regression valid?

GR interval

Mean interval

95% Confidence interval of the GR interval

T-statistic

P-value

(Critical p-value =0.0125)

Fail to Borderline Pass

0.33

0.30–0.35

5.84

< 0.001

Borderline Pass to Clear Pass

0.22

0.20–0.23

4.33

< 0.001

Clear Pass to Good

0.23

0.21–0.24

3.50

< 0.001

Good to Excellent

0.23

0.21–0.24

2.57

0.006

  1. Legend: Data from 117 examiners. Null hypothesis that each interval between GRs = 0.25
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BMC Medical Education

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