Number of cases and controls, adjusted odds ratios, and 95% confidence intervals by lineage and sex for occupational exposure to electromagnetic fields above typical residential levels up to two years prior to diagnosis
| Acute leukaemia | AML | ALL | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Exposure status | Case | Control | OR | 95% CI | Case | Control | OR | 95% CI | Case | Control | OR | 95% CI |
| Odds ratios, adjusted for deprivation, estimated using conditional logistic regression using never exposed as reference. | ||||||||||||
| AML, acute myeloid leukaemia; ALL, acute lymphoblastic leukaemia. | ||||||||||||
| Male and female | (n=764) | (n=1510) | (n=662) | (n=1309) | (n=92) | (n=181) | ||||||
| Never | 644 | 1266 | 1 | – | 564 | 1097 | 1 | – | 71 | 154 | 1 | – |
| Probable | 120 | 244 | 0.97 | (0.76 to 1.24) | 98 | 212 | 0.91 | (0.69 to 1.18) | 21 | 27 | 1.70 | (0.86 to 3.35) |
| Current | 34 | 73 | 0.92 | (0.61 to 1.41) | 26 | 65 | 0.80 | (0.50 to 1.28) | 8 | 8 | 2.10 | (0.74 to 5.99) |
| Past | 80 | 168 | 0.93 | (0.69 to 1.25) | 66 | 144 | 0.89 | (0.64 to 1.23) | 13 | 19 | 1.53 | (0.69 to 3.37) |
| Not known | 6 | 3 | 6 | 3 | 0 | 0 | ||||||
| Male | (n=431) | (n=848) | (n=372) | (n=732) | (n=53) | (n=104) | ||||||
| Never | 388 | 744 | 1 | – | 336 | 644 | 1 | – | 46 | 90 | 1 | – |
| Probable | 43 | 104 | 0.81 | (0.55 to 1.18) | 36 | 88 | 0.80 | (0.53 to 1.22) | 7 | 14 | 0.89 | (0.34 to 2.34) |
| Current | 19 | 39 | 0.96 | (0.54 to 1.69) | 15 | 35 | 0.86 | (0.46 to 1.61) | 4 | 4 | 1.65 | (0.40 to 6.90) |
| Past | 21 | 65 | 0.62 | (0.37 to 1.03) | 18 | 53 | 0.65 | (0.37 to 1.13) | 3 | 10 | 0.58 | (0.15 to 2.15) |
| Not known | 3 | 0 | 3 | 0 | 0 | 0 | ||||||
| Female | (n=333) | (n=662) | (n=290) | (n=577) | (n=39) | (n=77) | ||||||
| Never | 256 | 522 | 1 | – | 228 | 453 | 1 | – | 25 | 64 | 1 | – |
| Probable | 77 | 140 | 1.11 | (0.80 to 1.53) | 62 | 124 | 0.98 | (0.69 to 1.40) | 14 | 13 | 3.48 | (1.18 to 10.2) |
| Current | 15 | 34 | 0.89 | (0.47 to 1.66) | 11 | 30 | 0.73 | (0.36 to 1.48) | 4 | 4 | 2.95 | (0.57 to 15.3) |
| Past | 59 | 103 | 1.18 | (0.82 to 1.71) | 48 | 91 | 1.06 | (0.71 to 1.59) | 10 | 9 | 3.74 | (1.10 to 12.7) |
| Not known | 3 | 3 | 3 | 3 | 0 | 0 | ||||||