Slope at year(s) | Delayed treatment group (n = 78) | Early treatment group (n = 75) | p Value |
---|---|---|---|
Slope 0–1 year: based upon radiographs at study entry, 6 months, and 1 year; slope 0–2 years: based upon radiographs at study entry, 6 months, 1, and 2 years; slope 0–4 years: based upon radiographs at study entry, 6 months, 1, 2, 3, and 4 years; slope 1–4 years: based upon radiographs at 1, 2, 3, and 4 years; slope 2–4 years: based upon radiographs at 2, 3, and 4 years. | |||
0–1 | 5.0 (0, 15.0) | 1.0 (0, 5.0) | 0.005 |
0–2 | 4.1 (0.5, 12.6) | 1.0 (0, 5.3) | 0.001 |
0–4 | 2.5 (0.5, 7.7) | 1.3 (0, 4.4) | 0.032 |
1–4 | 0.9 (0, 7.0) | 0.7 (0, 4.2) | 0.52 |
2–4 | 1.0 (0, 6.5) | 1.0 (0, 5.3) | 0.82 |