Table 5 Intra-observer variation weighted Cohen kappa statistics

From: An international comparison of retinopathy of prematurity grading performance within the Benefits of Oxygen Saturation Targeting II trials

Measure

Treatment decisions

Plus disease

ROP stage

ROP zone

UK

0.95

0.84

0.92

0.74

ANZ

0.91

0.81

0.84

0.63

INT

0.72

0.91

0.9

0.88

All

0.88

0.85

0.88

0.83

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