In the absence of a traditional census and a comprehensive population register (as it is the case in the UK), administrative data sources, i.e. health, school or tax records, can offer an alternative to estimate the size of residence population. However, such data sources are designed to capture...

This paper has two main contributions. Firstly, we introduce a new approach, the latent instrumental variables (LIV) method, to estimate regression coefficients consistently in a simple linear regression model where regressor-error correlations (endogeneity) are likely to be present. The LIV...