Table 2

Intraobserver agreement for the degree of dysplasia among subjects in the NYC colonoscopy-based case-control study (1988, 1998)

1988 ratings1998 Degree of Dysplasia ClassificationaTotal
None or mildModerateSevereCISIntramucosal
None or mild81341127
Moderate916122039
Severe11381124
CIS219129648
Intramucosal261162752
Total2267471935190
1988 ratings1998 Degree of Dysplasia ClassificationbTotal
Low-grade dysplasiacHigh-grade dysplasiad
Low-grade dysplasia462066
High-grade dysplasia4381124
Total89101190
  • a κ = 0.20; 95% CI, 0.12–0.28. Weighted κ = 0.38; 95% CI, 0.29–0.47.

  • b κ = 0.32; 95% CI, 0.19–0.46.

  • c Includes none, mild, and moderate dysplasia.

  • d Includes severe, CIS, or intramucosal carcinoma.