Population mixing and childhood leukaemia and non-Hodgkin's lymphoma in census wards in England and Wales, 1966|[ndash]|87

摘要

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.