Table 2. Overall survival of children with ALL exposed to residential ELF–MF.
| ⩽0.1 μT |
0.1 μT—0.2 μT |
0.2 μT—0.3 μT |
>0.3 μT |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N (Events) | N (Events) | HR | 95% CI | N (Events) | HR | 95% CI | N (Events) | HR | 95% CI | |
| Main | 413 | 35 | 1.42 | 0.99–2.05 | 9 | 1.27 | 0.65–2.50 | 9 | 0.96 | 0.49–1.89 |
| US POG study not included | 393 | 29 | 1.42 | 0.96–2.12 | 8 | 1.28 | 0.63–2.61 | 6 | 0.70 | 0.31–1.59 |
| T-cell ALL | 61 | 9 | 2.35 | 1.09–5.08 | 0 | 0.00 | — | 0 | 0.00 | — |
| B-precursor ALL | 222 | 25 | 1.46 | 0.95–2.25 | 9 | 1.86 | 0.94–3.68 | 8 | 1.35 | 0.66–2.77 |
| Other ALL | 130 | 1 | 0.25 | 0.03–1.93 | 0 | 0.00 | — | 1 | 0.90 | 0.12–6.84 |
Abbreviations: ALL, acute lymphoblastic leukemia; CI, confidence interval; HR, hazard ratio; POG, Pediatric Oncology Group.