Table IV.

Reliability and absolute agreement values for G&V and DC systems

Inter-rater reliability
Measure	Absolute agreement	Kappa	95% CI
Classification
G&V	10.0% (4/40)	0.390	0.150–0.598
DC	37.5% (15/40)	0.384	0.213–0.569
Intra-rater reliability
Measure	Absolute agreement	Kappa	95% CI
Classification
G&V
Rater 2	92.5%	0.737	0.394–1.000
Rater 4	82.5%	0.590	0.307–0.833
DC
Rater 2	65.0%	0.393	0.109 to 0.625
Rater 4	65.0%	0.453	0.195 to 0.666