Those Missing Millions: Implications for Social Statistics of Non-response to the 1991 Census

Abstract

This article highlights some of the issues raised by incomplete coverage of the 1991 census in Britain, illustrating how far-reaching are its implications across the spectrum of social statistics. The origins and the current state-of-play of the debate over the distribution of the non-response are summarised and the implications then assessed. For many census variables, non-response reduces the observed variation between areas, with consequences for the distribution of resources for local services. The implications for the reliability of the most basic of health statistics are raised through mortality rates. A rough estimate is made, and supporting evidence presented, of the possible numbers of households which were missed by the census. Some implications for housing needs assessments are illustrated along with the effect of the sudden upwards revision of official estimates of the dwelling stock and the resulting overall great uncertainty over the number of vacant dwellings in the country. Finally, recent research on the electoral implications of people's choice not to be registered is discussed as this may well help to understand census non-response. Such a pervasive degree of uncertainty across almost all figures concerning people has not been experienced in Britain since the last century. There is little reason to expect this uncertainty and the importance of its social policy implications to diminish in the future, without significant changes to census procedures and to the relationship between government and governed.