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Table 3 Abstractor-specific intra-rater reliability coefficients

From: Examining intra-rater and inter-rater response agreement: A medical chart abstraction study of a community-based asthma care program

   Kappa*
Abstractors Percentage agreement (%) κ 95% CI
1 88 0.21 (0.02–0.40)
2 85 0.71 (0.62–0.80)
3 91 0.79 (0.74–0.84)
4 94 0.83 (0.79–0.87)
5 96 0.89 (0.85–0.92)
6 94 0.78 (0.66–0.89)
7 93 0.78 (0.72–0.84)
8 79 0.57 (0.50–0.63)
9 88 0.66 (0.57–0.75)
10 98 0.94 (0.92–0.96)
  1. * Chi-square test statistic for homogeneity = 238, df = 9, p < 0.0001
  2. Abbreviations: κ kappa statistic, CI confidence interval