Study type: Epidemiological study (observational study)

Childhood incidence of acute lymphoblastic leukaemia and exposure to broadcast radiation in Sydney - a second look. epidem.

Published in: Aust N Z J Public Health 1998; 22 (3) Suppl: 360-367

Aim of study (acc. to author)

An ecological study was conducted in Australia to examine previous findings of an apparent association between incidence of childhood leukemia and radio frequency exposure from television transmitters in Sydney.

Further details

The study area included 16 local government areas in comparison to 9 local government areas divided in inner and outer circle in the previous study.

Endpoint/type of risk estimation

Type of risk estimation:



Exposure groups

Group Description
Group 1 all local government areas
Group 2 all local government areas excluding Lane Cove
Group 3 all local government areas excluding Hunters Hill and areas across the water (cf. Hocking et al.)
Group 4 all local government areas excluding Hunters Hill, areas across the water (cf. Hocking et al.) and Lane Cove


Statistical analysis method: ( adjustment: )

Conclusion (acc. to author)

The reanalysis of the data of Hocking et al. 1996 showed that one of the highly exposed local government area, Lane Cove, contributed all excess while in a similar exposed area the incidence of childhood acute lymphoblastic leukaemia was similar to the rate of New South Wales. The excess was most evident during the time period 1972 - 1978 among the youngest group before starting 24 hour TV transmissions.
The authors concluded that the population-level evidence is weak that radiorequency exposure from television transmitters is associated with or determines the incidence of childhood leukemia.

Study funded by

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