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Table 2 Agreement in Charlson comorbidity index score between medical records and claims data

From: A comparison of the Charlson comorbidity index derived from medical records and claims data from patients undergoing lung cancer surgery in Korea: a population-based investigation

Claims data CCI score Medical records CCI score Total
  0 1 2 3 4 5  
0 122 26 3 3 0 0 154
1 90 22 6 1 0 0 119
2 41 24 5 3 0 0 73
3 14 11 6 2 0 3 36
4 2 1 1 1 0 0 5
5 1 2 0 0 1 0 4
8 0 0 0 1 0 0 1
Total 270 86 21 11 1 3 392
  1. Note: kappa = 0.054 (SE 0.029) (agreement rate = 38.52%). Bold characters represent a complete concordance of the frequency between the medical record and claims data.