Centre for Policy on Ageing



Review of methods for estimating life expectancy by social class using the ONS Longitudinal Study
Author(s)	Brian Johnson, Louisa Blackwell
Journal title	Health Statistics Quarterly, no 35, Autumn 2007
Pages	pp 28-37
Source	http://www.statistics.gov.uk
Keywords	Life expectancy tables ; Social class ; Methodology ; Longitudinal surveys.
Annotation	Changes are proposed in methods for estimating life expectancy by social class using the Office for National Statistics' (ONS) Longitudinal Study (LS), which this article reviews. First, computational changes, including revised methods for age-specific mortality rates, more precise survival duration calculations and increased social class attribution through the inclusion of updated information. Second, extension of the criteria used to exclude LS members from the analysis using information on presence in the 2001 Census. Lastly, the use of Health Authority deregistration data to approximate unrecorded emigration, together with information from the 2001 Census, to reduce a potential source of bias in mortality calculation. The impact on existing results is quantified and it is proposed that these methods are used in the updating of the published series. (RH).
Accession Number	CPA-070912203 A
Classmark	S7: T: 3D: 3J
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