Table 3.
Association between potential risk factors and outcome of brace treatment
| Items | N | Percentage of curve progression | Percentage of surgery |
|---|---|---|---|
| Risser sign | |||
| 0–1 | 177 | 35.0% | 27.7% |
| 2–3 | 135 | 20.7% | 8.1% |
| P value (χ2) | 0.008 | P < 0.001 | |
| Gender | |||
| Male | 41 | 34.1% | 26.8% |
| Female | 271 | 28.0% | 18.0% |
| P value (χ2) | 0.304 | 0.203 | |
| Curve pattern | |||
| Single thoracic curve | 128 | 32.1% | 23.4% |
| Single thoracolumbar or lumbar curve | 66 | 30.3% | 17.6% |
| Double major curve | 118 | 24.5% | 15.2% |
| P value (χ2) | 0.493 | 0.263 | |
| Initial curve magnitude | |||
| <30° | 195 | 27.2% | 12.8% |
| ≧30° | 117 | 31.6% | 29.9% |
| P value (χ2) | 0.113 | <0.001 | |