Population mixing and childhood leukaemia and non-Hodgkin's lymphoma in census wards in England and Wales, 1966-87.
We found an increased risk of childhood leukaemia with higher levels of inward migration, particularly from outside the region (rate ratio=1.9, 95%CI: 1.2-2.9, P<0.01). This significant effect was observed only in urban areas, although a marked but non-significant effect was seen in affluent, rural areas.
Dickinson
Heather O
HO
North of England Children's Cancer Research Unit, Department of Child Health, University of Newcastle, Royal Victoria Infirmary, Queen Victoria Road, Newcastle upon Tyne NE1 4LP, UK. heather.dickinson@ncl.ac.uk
Hammal
D M
DM
Bithell
J F
JF
Parker
L
L
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004641:Emigration and Immigration; D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007938:Leukemia / Q000453:epidemiology* / Q000209:etiology; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D012042:Registries; D012189:Retrospective Studies; D012307:Risk Factors; D012424:Rural Population; D014852:Wales / Q000453:epidemiology