Table 6. 50-degree threshold regression model (radius).

Values are presented as number of patients with curve progression ≥50°/(total number of patients), 95% confidence interval for population proportion, and predicted % generated from regression model. Bold typed cells represent the radius grades and curve magnitude at initial presentation for which curve progression to ≥50° are likely to happen at a probability of ≥25%.

^a)Those with wide 95% confidence intervals can be resulted from the few patients for accurate estimates.