Intraobserver agreementa for the classification of histology among subjects in the NYC colonoscopy-based case-control study (1988, 1998)
| 1988 ratings | 1998 Histology Classification | Total | ||||
|---|---|---|---|---|---|---|
| Tubular | Tubulovillous | Villous | ||||
| Tubular | 55 | 9 | 0 | 64 | ||
| Tubulovillous | 52 | 54 | 3 | 109 | ||
| Villous | 2 | 10 | 1 | 13 | ||
| Total | 109 | 73 | 4 | 186b | ||
a κ = 0.28; 95% CI, 0.17–0.39. Weighted κ = 0.32; 95% CI, 0.22–0.42.
b The totals do not equal the number of cases reviewed because of missing information.