Decreased Survival for Childhood Leukemia in Proximity to Television Towers

Previously, an increased risk of childhood leukemia was identified among children who resided in an inner ring (radius ~4 km) of 3 municipalities surrounding television towers, compared with children who resided in an outer ring (radius ~4-12 km) of 6 municipalities surrounding, but farther away from, the towers, which are situated in North Sydney, Australia. In the current study, the authors examined the survival experience of these children for all childhood leukemias, and for acute lymphatic leukemia (International Statistical Classification of Diseases and Related Health Problems, 9th revision [ICD-9] rubric 204.0) in particular. Of 123 cases of acute lymphatic leukemia, 29 cases (16 of whom died) were in the inner ring of municipalities nearest the towers, and 94 cases (34 of whom died) occurred in the outer, more-distant ring. There was a significant difference in survival rates between the 2 groups (log-rank test, p = 0.03; Wilcoxon, p = 0.05). The 5-yr survival in the inner ring of municipalities was 55%, and in the outer ring was 71% (i.e., subjects in the inner ring were 23% less likely to survive than those in the outer ring); at 10 yr, survival in the inner and outer rings was 33% and 62%, respectively. Following adjustment, the mortality rate ratio that the authors used to compare the inner ring with the outer ring was 2.1 (95% confidence interval = 1.1, 4.0). There was an association between residential proximity to the television towers and decreased survival among cases of childhood leukemia in North Sydney, Australia.

[1]  J. Holt CHANGING EPIDEMIOLOGY OF MALIGNANT MELANOMA IN QUEENSLAND , 1980, The Medical journal of Australia.

[2]  M. Greaves,et al.  Prenatal origin of acute lymphoblastic leukaemia in children , 1999, The Lancet.

[3]  N. Davis,et al.  CHANGING EPIDEMIOLOGY OF MALIGNANT MELANOMA IN QUEENSLAND , 1980, The Medical journal of Australia.

[4]  I. Gordon,et al.  Cancer incidence and mortality and proximity to TV towers , 1996, The Medical journal of Australia.

[5]  T. Dragani,et al.  Libri Ricevuti: IARC Monographs on the Evaluation of Carcinogenic Risks to Humans , 1992 .

[6]  Yongbai Yin,et al.  Childhood incidence of acute lymphoblastic leukaemia and exposure to broadcast radiation in Sydney — a second look , 1998, Australian and New Zealand journal of public health.

[7]  TV towers and childhood leukaemia (continued) , 2000, Australian and New Zealand journal of public health.

[8]  I. Gordon,et al.  Childhood leukaemia and TV towers revisited. , 1999, Australian and New Zealand journal of public health.

[9]  B. Veyret,et al.  No effect of short-term exposure to GSM-modulated low-power microwaves on benzo(a)pyrene-induced tumours in rat. , 1999, International journal of radiation biology.

[10]  I Kleinschmidt,et al.  Cancer incidence near radio and television transmitters in Great Britain. I. Sutton Coldfield transmitter. , 1997, American journal of epidemiology.

[11]  G. Shaddick,et al.  Cancer incidence near radio and television transmitters in Great Britain. II. All high power transmitters. , 1997, American journal of epidemiology.

[12]  D. Bleyl,et al.  IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. Overall Evaluations of Carcinogenicity: An Updating of IARC Monographs vol. 1 to 42. Supplement 7. 440 Seiten. International Agency for Research on Cancer, Lyon 1987. Preis: 65, – s.Fr , 1989 .

[13]  Gavin Shaddick,et al.  CONTRIBUTIONS Cancer Incidence near Radio and Television Transmitters in Great Britain , 2004 .