Table 2.
Intraobserver and interobserver agreement in radiographic measurements
| Measurement | Inclination (AP view of pelvis) | 95% CI | Acetabular component version (cross-table lateral) | 95% CI | Acetabular component version (modified cross-table lateral) | 95% CI | Acetabular component version (CT) | 95% CI |
|---|---|---|---|---|---|---|---|---|
| Interobserver | 0.995 | 0.992–0.998 | 0.995 | 0.992–0.998 | 0.996 | 0.993–0.998 | 0.985 | 0.974–0.993 |
| Intraobserver 1 | 0.988 | 0.973–0.994 | 0.997 | 0.992–0.998 | 0.999 | 0.999–0.999 | 0.988 | 0.974–0.989 |
| Intraobserver 2 | 0.998 | 0.995–0.999 | 0.987 | 0.971–0.994 | 0.985 | 0.968–0.993 | 0.956 | 0.904–0.980 |