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NHSCR data availability
NHSCR data availability
Individual anonymised records or Primary Unit Data (PUD) have been available since the early 1980s
The TIMMIG system (TIMe series MIGration) developed at Leeds (Rees and Duke-Williams, 1993) merged quarterly data into annual blocks to create time series from 1975 to 1998
NHSCR data availability post-1998 is more problematic
Between 1998 and 2001 - change from data being produced at the FHSA geography to the new HA geography.
Regional flows are freely available from the ONS, however flows between Health Authorities require special request to the ONS