Study type: Epidemiological study (observational study)

Investigation of increased incidence in childhood leukemia near radio towers in Hawaii: preliminary observations. epidem.

Published in: J Environ Pathol Toxicol Oncol 1994; 13 (1): 33-37

Aim of study (acc. to author)

The incidence of childhood leukemia and possible risk factors were investigated in a case-control study in Hawaii, USA.

Endpoint/type of risk estimation

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

Exposure

Assessment

Exposure groups

Group Description
Reference group 1 distance of residence to radio towers: < 4.2 km
Group 2 distance of residence to radio towers: ≥ 4.2 km

Population

Case group

Control group

Study size

Cases Controls
Eligible 12 48

Conclusion (acc. to author)

The incidence of childhood leukemia was significantly increased in the period from 1979 to 1990 (SIR 2.09, CI 1.08-3.65), particularly between 1982 and 1984, when 7 out of the 12 observed cases occurred. A statistically non-significant increased risk was observed among children living within 4.6 km to the radio towers (OR 2.0, CI 0.06-8.3). The authors noted that the clustering could be a chance event.

Limitations (acc. to author)

The findings are based on low numbers.

Study funded by

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