Table 4 Relationship between disease characteristics and progression analyzed by Binary logistic regression models
Parameters | ARCO stage | OR (95% CI) of collapsed stage | Adjusted-OR (95% CI) of collapsed stage * | ||||
|---|---|---|---|---|---|---|---|
Total | II | IIIA | IIIB | IIIC | |||
Age (years, n) | 0.91 (0.72–1.16) | ||||||
≤ 11 | 17 | 4 | 5 | 3 | 5 | ||
12 | 13 | 3 | 4 | 2 | 4 | ||
13 | 20 | 10 | 4 | 2 | 4 | ||
14 | 25 | 9 | 9 | 2 | 5 | ||
15 | 24 | 8 | 9 | 2 | 5 | ||
≥ 16 | 16 | 6 | 3 | 5 | 2 | ||
Sex (n) | 0.86 (0.37–1.96) | ||||||
Male | 78 | 28 | 25 | 10 | 15 | ||
Female | 37 | 12 | 9 | 6 | 10 | ||
Symptomatic (n) | 10.24 (4.17–25.1) ** | 6.25 (2.39–16.36) ** | |||||
No | 47 | 30 | 12 | 3 | 2 | ||
Yes | 68 | 10 | 22 | 13 | 23 | ||
Interval between fracture and AVN diagnosis (n) | 1.49 (0.81–2.73) | ||||||
Within 1 year | 71 | 27 | 20 | 11 | 13 | ||
1 to 2 years | 32 | 11 | 10 | 4 | 7 | ||
More than 2 years | 12 | 2 | 4 | 1 | 5 | ||
JIC classification (n) | 5.08 (2.54–10.12) ** | 3.41 (1.62–7.17) ** | |||||
A/B | 13 | 12 | 1 | 0 | 0 | ||
C1 | 40 | 17 | 21 | 1 | 1 | ||
C2 | 62 | 11 | 12 | 15 | 24 | ||
Ratliff classification (n) | 0.15 (0.06–0.37) ** | ||||||
I | 50 | 7 | 8 | 12 | 23 | ||
II | 61 | 29 | 26 | 4 | 2 | ||
III | 4 | 4 | 0 | 0 | 0 | ||