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Catterall classification for rating at early fragmentation and final rating of patients with Legg-Calve-Perthes disease
| Rating at early fragmentation | Final rating | ||||
|---|---|---|---|---|---|
| I | II | III | IV | Total | |
| I | – | – | – | – | 0 |
| II | – | 1 | – | 2 | 3 |
| III | – | – | 16 | 10 | 26 |
| IV | – | – | – | 28 | 28 |
| Total | 0 | 1 | 16 | 40 | 57 |
Percent agreement, 79%; intraclass correlation coefficient, 0.528 (95% CI, 0.274–0.705).
