Guide to parallel and combined analysis of the ONS LS, SLS and NILS
Young, H. (2009) CeLSIUS: London. 1 July 2009. [SLS][ONS LS][NILS]
The Office for National Statistics Longitudinal Study (ONS LS), covering England and Wales was established in the mid 1970s and now contains data from up to four Censuses, together with information on vital events currently (July 2009) available from the 1971 Census until the end of 2006. In 2007 the Scottish Longitudinal Study (SLS) and the Northern Ireland Longitudinal Study (NILS) were both launched; both, like the ONS LS, include information from Census and vital registration sources, although there are a number of differences in linked data available which are referred to below. This means that it is now possible to carry out UK-wide analysis using Census based record linkage studies.
The aim of this document is to provide a guide for those who wish to carry out analysis of two or three of these datasets together. The information presented is based on experience of carrying out analysis on the three studies together as part of an ESRC Census Programme funded project. The next section briefly presents similarities and differences between the three datasets. Subsequent sections document legal and logistical issues in carrying out combined analyses; options for project design; procedures for the application process; and issues in data preparation and analysis.
Download output document: Technical Working Paper (PDF 59KB)
Output from project: 0300411