Table 1.
Statistical comparisons for the Woo and Morrey, ischiolateral, and EBRA methods
| Variable | Woo and Morrey | Ischiolateral | EBRA | p Value | ||
|---|---|---|---|---|---|---|
| Woo and Morrey versus ischiolateral | Woo and Morrey versus EBRA | Ischiolateral versus EBRA | ||||
| Mean SD of anteversion measurements | 3.7° | 2.2° | 2.1° | < 0.001 | < 0.001 | 0.78 |
| Number of hips with SD > 4° (n = 52 hips) | 19 (36.5%) | 6 (11.5%) | 6 (11.5%) | 0.003 | 0.003 | 1 |
| Number of measurements > 4° from mean (n = 190 radiographs) | 24 (12.6%) | 7 (3.8%) | 9 (4.7%) | < 0.001 | < 0.001 | 0.66 |
| ICC for intraobserver reliability | 0.9 | 0.9 | ||||
| ICC for interobserver reliability | 0.9 | 0.9 | ||||
EBRA = Einzel-Bild-Roentgen-Analyse; ICC = intraclass correlation coefficient.