Study type: Epidemiological study (observational study)

The relationship between residential proximity to extremely low frequency power transmission lines and adverse birth outcomes. epidem.

Published in: J Epidemiol Community Health 2011; 65 (1): 83-85

Aim of study (acc. to author)

The association between residential proximity to transmission lines and adverse birth outcomes was investigated in Canada.

Endpoint/type of risk estimation

Type of risk estimation: (odds ratio (OR))

Exposure

Assessment

Exposure groups

Group Description
Group 1 residential distance to power lines: < 50 m
Group 2 residential distance to power lines: 50 - 74.9 m
Group 3 residential distance to power lines: 75 - 99.9 m
Group 4 residential distance to power lines: 100 -149.9 m
Group 5 residential distance to power lines: 150 - 399.9 m
Reference group 6 residential distance to power lines: ≥ 400 m

Population

Study size

Type Value
Total 707,215
Statistical analysis method: ( adjustment: )

Conclusion (acc. to author)

17 % of mothers resided within 400 m of transmission lines, 1.5 % within 50 m. No increased risk was observed for residential proximity to transmission lines and the adverse birth outcomes preterm birth, low birth weight, small-for-gestational-age birth, and infant sex ratio. The authors conclude that residential proximity to transmission lines is not associated with adverse birth outcomes.

Related articles