Are cities becoming more unhealthy? An analysis of mortality rates in Belfast and Dublin between 1981 and 1991 to illustrate a methodological difficulty with ecological studies.
O'Reilly
D
D
Health and Social Care Research Unit, Queens University of Belfast, Mulhouse Building, Grosvenor Road, Belfast BT12 6BJ, Northern Ireland. d.oreilly@qub.ac.uk
Browne
S
S
Johnson
Z
Z
Kelly
A
A
D006801:Humans; D007494:Ireland / Q000453:epidemiology; D009026:Mortality / Q000639:trends*; D009660:Northern Ireland / Q000453:epidemiology; D012111:Residence Characteristics / Q000706:statistics & numerical data; D017062:Small-Area Analysis; D014504:Urban Health / Q000639:trends*