An analysis of patient register data in the Longitudinal Study – what does it tell us about the quality of the data?

Smallwood, S. & Lynch, K. (2010) Population Trends, 141(Autumn), 151 - 169. Office for National Statistics. 23 September 2010. [ONS LS]

Other information:

This article uses data for members of the ONS Longitudinal Study (LS) from both Census 2001 enumeration and patient registrations “frozen” on census day 2001 from the National Health Service Central Register (NHSCR) to examine potential sources of difference in area of usual residence.

Overall 95.7 per cent of ONS LS members enumerated at census resided in the same area as recorded on the NHSCR data. Where areas differed, or the ONS LS member was not on the NHSCR on census day, subsequent NHSCR records were examined. Records flagged on the NHSCR as ONS LS members in England and Wales on census day but with no census record were also investigated.

Available online: Population Trends,
Download output document: Full paper (PDF 149KB)


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