Table 2 Power frequency magnetic fields and the risk of childhood leukaemia - results from nine studies included in the pooled analysis of Ahlbom et al [4]
| Â | Â | Leukaemia cases | |
|---|---|---|---|
|  | Odds Ratio (95% CI) ≥ 0.4 μT vs. < 0.1 μT | Observed ≥ 0.4 μT | Expected ≥ 0.4 μT |
Canada | 1.55 (0.65 - 3.68) | 13 | 10 |
USA | 3.44 (1.24 - 9.54) | 17 | 5 |
UK | 1.00 (0.30 - 3.37) | 4 | 4 |
Norway | 0 cases, 10 controls | 0 | 3 |
Germany | 2.00 (0.26-15.17) | 5 | 2 |
Sweden | 3.74 (1.23 - 11.4) | 5 | 2 |
Finland | 6.21 (0.68 - 56.9) | 1 | 0 |
Denmark | 2 cases, 0 controls | 2 | 0 |
New Zealand | 0 cases, 0 controls | 0 | 0 |
Total | 2.00 (1.27 - 3.13) | 47 | 26 |