Study type: Epidemiological study (observational study)

Occupational exposure to extremely low-frequency magnetic fields and cardiovascular disease mortality in a prospective cohort study. epidem.

Published in: Occup Environ Med 2013; 70 (6): 402-407

Aim of study (acc. to author)

The association between occupational extremely low-frequency magnetic fields exposure and cardiovascular disease (CVD) mortality was investigated within a community-based prospective cohort study in The Netherlands.

Endpoint/type of risk estimation

Type of risk estimation: (hazard rate)

Exposure

Assessment

Exposure groups

Group Description
Reference group 1 background exposure
Group 2 low or high exposure
Reference group 3 cumulative exposure: 0 unit-years
Group 4 cumulative exposure, 1st tertile: 0.5 - 9 unit-years
Group 5 cumulative exposure, 2nd tertile: 9.5 -28 unit-years
Group 6 cumulative exposure, 3rd tertile: 28.5 - 208 unit-years

Population

Study size

Type Value
Total 120,852
Statistical analysis method: ( adjustment: )

Conclusion (acc. to author)

In this prospective population-based cohort study, 120,852 men and women were followed-up for cardiovascular disease mortality over a period of 10 years, resulting in 8200 deaths caused cardiovascular diseases.
Ever low or high exposure to extremely low-frequency magnetic fields showed no association with total cardiovascular disease mortality (HR 1.02, CI 0.99-1.06), nor with any cause-specific subtypes of cardiovascular disease mortality. Other exposure metrics showed no increased risks either.
The authors concluded that they found no indication of an association between occupational extremely low-frequency magnetic fields exposure and risk of cardiovascular disease mortality.

Study funded by

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