Actuarial analysis showing percentage of 450 NF1 patients free from a malignant nerve sheath tumour at the time intervals shown
| Interval finish time (y) | Cumulative % free at end of period | 95% confidence interval |
|---|---|---|
| 10 | 100 | N/A |
| 20 | 98.2 | 96.7–99.7 |
| 30 | 96.0 | 93.4–98.6 |
| 40 | 92.6 | 88.5–96.7 |
| 50 | 92.6 | 88.5–96.7 |
| 60 | 84.4 | 72.9–95.9 |
| 70 | 84.4 | 72.9–95.9 |
| 70+ | 84.4 | 72.9–95.9 |