Table 3 Cross tabulation and kappa statistics for the degree of agreement between the low-dose CT and plain radiography in detecting evidence of loosening
Loosening CT | Kappa | ||||
|---|---|---|---|---|---|
No | Yes | Total | |||
Loosening plain x-ray | No | 55 | 15 | 70 | |
Yes | 0 | 11 | 11 | ||
55 | 26 | 81 | |||
Kappa 0 (P-value 0.001) | |||||