An infectious aetiology for childhood brain tumours? Evidence from space-time clustering and seasonality analyses

被引:0
作者
McNally R.J.Q. [1 ]
Cairns D.P. [1 ]
Eden O.B. [2 ]
Alexander F.E. [3 ]
Taylor G.M. [4 ]
Kelsey A.M. [5 ]
Birch J.M. [1 ]
机构
[1] Cancer Research UK Paediatric and Familial Cancer Research Group, Central Manchester and Manchester Children's University Hospitals NHS Trust
[2] Academic Unit of Paediatric Oncology, Central Manchester and Manchester Children's University Hospitals NHS Trust, Manchester M27 4HA, Hospital Road
[3] Department of Public Health Sciences, The University of Edinburgh Medical School, Edinburgh EH8 9AG, Teviot Place
[4] Immunogenetics Laboratory, Department of Medical Genetics, St. Mary's Hospital
[5] Department of Pathology, Central Manchester and Manchester Children's University Hospitals NHS Trust, Manchester M27 4HA, Hospital Road
关键词
Aetiology; Brain tumours; Children; Infection; Seasonal variation; Space-time clustering;
D O I
10.1038/sj.bjc.6600228
中图分类号
学科分类号
摘要
To investigate whether infections or other environmental exposures may be involved in the aetiology of childhood central nervous system tumours, we have analysed for space-time clustering and seasonality using population-based data from the North West of England for the period 1954 to 1998. Knox tests for space-time interactions between cases were applied with fixed thresholds of close in space, < 5 km, and close in time, < 1 year apart. Addresses at birth and diagnosis were used. Tests were repeated replacing geographical distance with distance to the Nth nearest neighbour. N was chosen such that the mean distance was 5 km. Data were also examined by a second order procedure based on K-functions. Tests for heterogeneity and Edwards' test for sinusoidal variation were applied to examine changes of incidence with month of birth or diagnosis. There was strong evidence of space-time clustering, particularly involving cases of astrocytoma and ependymoma. Analyses of seasonal variation showed excesses of cases born in the late Autumn or Winter. Results are consistent with a role for infections in a proportion of cases from these diagnostic groups. Further studies are needed to identify putative infectious agents. © 2002 Cancer Research UK.
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页码:1070 / 1077
页数:7
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