ID Number		1056
Study Type		Epidemiology
Model		Mobile phone use in New Zealand and correlation with brain, head, and neck tumors
Details		Mobile phone use in New Zealand (since ~1987) was plotted and correlated with the incidence of brain, head, and neck malignancies (from the NZ Cancer Registry) from 1986 - 1998. The authors report that no correlation between mobile phone use and any significant effect on baseline brain tumor incidence was observed. Specifically, no correlation with brain regions recieving high, medium, or low levels of RF exposure based on dosimetry data. However, the authors also state that ecological studies of this nature are limited in many ways and a stronger study design is clearly needed to establish more exactly any elevation in risk. Quote: "we found no evidence of an increase in brain malignancies in the years following the introduction of cellular telephones. This suggests that if there is an increase in tumour rates with cellular telephone use it is relatively weak, or is manifest after a longer latency period
Findings		No Effects
Status		Completed With Publication
Principal Investigator		Wellington School of Medicine, New Zealand - acook@wnmeds.ac.nz
Funding Agency		Health Res Council, New Zealand
Country		NEW ZEALAND
References		Cook, A et al. The New Zealand Medical Journal, (2003) 116:1-8
Comments		Because ecological correlation studies are based on group (not individual) data, there is no way to know whether any (or what percentage) of brain malignancy cases used a mobile phone, and for how long.