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Table 2

Definitions and statistical measures of consensus, agreement and stability

DefinitionStatisticsRound 2Round 3
ConsensusThe extent to which the group of experts share the same opinionMedian
IQR
Per cent agreement
≥3.5
≤1.5
≥60%
≥3.5
≤1
≥70%

AgreementA measure of inter-rater agreement where the rating of one expert can be predicted by the rating of anotherKendall’s coefficient of concordanceSignificant agreement (p<0.05)Significant agreement (p<0.05)

StabilityThe consistency of responses between successive roundsWilcoxon rank-sum testNASignificance level p<0.05

NA, not applicable.