Study type: Epidemiological study (observational study)

Cancer incidence near radio and television transmitters in Great Britain. I. Sutton Coldfield transmitter. epidem.

Published in: Am J Epidemiol 1997; 145 (1): 1-9

Aim of study (acc. to author)

The cancer incidence in 1974 - 1986 was investigated in the vicinity of the Sutton Coldfield transmitter in Birmingham, England.

Further details

The study area was defined as a circle of 10 km radius centered on the Sutton Coldfield transmitter and further divided into 10 areas of increasing distance.

Endpoint/type of risk estimation

Type of risk estimation:

Exposure

Assessment

Exposure groups

Group Description
Group 1 distance from transmitter: 0 - 0.5 km
Group 2 distance from transmitter: 0.5 - 1.0 km
Group 3 distance from transmitter: 1.0 - 2.0 km
Group 4 distance from transmitter: 2.0 - 3.0 km
Group 5 distance from transmitter: 3.0 - 4.9 km
Group 6 distance from transmitter: 4.9 - 6.3 km
Group 7 distance from transmitter: 6.3 - 7.4 km
Group 8 distance from transmitter: 7.4 - 8.3 km
Group 9 distance from transmitter: 8.3 - 9.2 km
Group 10 distance from transmitter: 9.2 - 10 km

Population

Study size

Type Value
Total 408,000
Statistical analysis method: ( adjustment: )

Conclusion (acc. to author)

The risk for adult leukemia within 2 km distance from the Sutton Coldfield transmitter was significantly increased (RR 1.83, CI 1.22-2.74), and a significant decline in risk with distance from the transmitter was observed. A significant decline in risk with increasing distance was also found for bladder cancer and for skin cancer, possibly related to socioeconomic confounding.
The authors concluded that no causal implications can be made from this single cluster investigation.

Study funded by

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