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Table 4 Chance corrected agreement on the classification of 284 substandard factors in the main category and subcategories of the Groningen classification of substandard factors, classified by two classifier groups (CDG* and ICG¥) separately and combined

From: Classification of substandard factors in perinatal care: development and multidisciplinary inter-rater agreement of the Groningen-system

 

CDG

ICG

CDG and ICG

 

n§

κ (95 % CI)*

n§

κ (95 % CI)*

n§

κ (95 % CI)*

Main category

284

0.68 (0.66-0.70)

284

0,57 (0.54-0.59)

284

0.64 (0.62-0.65)

Subcategory1

140

0.56 (0.54-0.59)

111

0.44 (0.39-0.48)

87

0.50 (0.48-0.52)

Subcategory 2

45

0.28 (−0.09-0.66)

27

0.37 (−0.03-0.72)

15

−0.01 (−0,38-0,36)

  1. *CDG = Classification Development Group
  2. ¥ICG = Independent Classification Group
  3. §n = total number of substandard factors (main category) and number of substandard factors with 100 % agreement in the main category en subcategory1 respectively
  4. *κ (95 % CI) = kappa statistic ( 95 % confidence interval)