Selection bias from differential residential mobility as an explanation for associations of wire codes with childhood cancer

摘要: Abstract Several studies of childhood cancer, especially leukemia, in residential areas have reported an association with wire configuration codes. These codes were suggested to be surrogates electromagnetic field exposure. However, the selection criteria used several caused case and control populations non-comparable, respect mobility. Specifically, controls required residentially stable but cases not. Thus, artificial between mobility cancer was created by subject procedure. The present study 5721 residences Columbus, Ohio conducted learn if bias due differences residental mobility, rather than fields, could explain cancer. It found that proportion homes classified as “high” code non-stable population 31%greater corresponding population. is finding shows high are associated which residents mobile low occupied residents. a consequence this codes, will also produce false