Odds ratios (OR) for subtypes of tumours of the endocrine glands in workers exposed to high levels of ELF magnetic fields from welding, Sweden 1985–94
| Subtype | Welding | All types of welding | Resistance welding | Arc welding | |||
|---|---|---|---|---|---|---|---|
| Controls/cases | OR (95% CI)* | Controls/cases | OR (95% CI)* | Controls/cases | OR (95% CI)* | ||
| *Odds ratios (with 95% confidence intervals), adjusted for sex, year of birth, solvent exposure, and year of inclusion. | |||||||
| Adrenal gland | Never | 199/24 | 1.0 | 206/29 | 1.0 | 210/24 | 1.0 |
| Ever | 20/5 | 1.7 (0.6 to 5.2) | 13/0 | – | 9/5 | 3.4 (1.0 to 12.2) | |
| Pituitary gland | Never | 258/31 | 1.0 | 272/35 | 1.0 | 273/32 | 1.0 |
| Ever | 32/5 | 1.4 (0.5 to 4.2) | 18/1 | 0.5 (0.1 to 4.2) | 17/4 | 1.8 (0.5 to 6.2) | |
| Parathyroid gland | Never | 542/53 | 1.0 | 558/61 | 1.0 | 561/57 | 1.0 |
| Ever | 37/14 | 3.3 (1.6 to 6.9) | 21/6 | 2.6 (0.9 to 7.1) | 18/10 | 4.3 (1.7 to 10.6) | |