Table 2 Summary of 24-h time-weighted average (TWA) and geometric mean (GM) magnetic field exposure results
From: Magnetic field exposure and long-term survival among children with leukaemia
TWA | GM | |||
|---|---|---|---|---|
Exposure ( μ T) | Frequency | % | Frequency | % |
<0.1 | 251 | 65 | 294 | 76 |
0.1–0.19 | 95 | 25 | 67 | 17 |
0.2–0.29 | 21 | 5 | 11 | 3 |
0.3–0.39 | 7 | 2 | 10 | 3 |
0.4–0.49 | 7 | 2 | 4 | 1 |
0.5–0.59 | 1 | 0.3 | 0 | 0 |
⩾0.6 | 4 | 1 | 0 | 0 |
Total | 386 | 386 | ||
