Cancer incidence and mortality and proximity to TV towers

摘要: Objective To determine whether there is an increased cancer incidence and mortality in populations exposed to radiofrequency radiations from TV towers. Design An ecological study comparing mortality, 1972-1990, nine municipalities, three of which surround the towers six are further away (TV radiation decreases with square distance source.) Cancer data were obtained then Commonwealth Department Human Services Health. Data on frequency, power, period broadcasting for Communications Arts. The calculated power density area ranged 8.0 microW/cm2 near 0.2 at a radius 4km 0.02 12 km. Setting Northern Sydney, where have been since 1956. Outcome measures Rate ratios leukaemia brain tumour inner outer areas. Results For all ages, rate ratio total was 1.24 (95% confidence interval [CI], 1.09-1.40). Among children, 1.58 CI, 1.07-2.34) it 2.32 1.35-4.01). childhood lymphatic (the most common type) 1.55 1.00-2.41) 2.74 1.42-5.27) mortality. Brain not increased. Conclusion We found association between proximity