In this paper, we study a long-run disaggregated model of consumption following an approach based on an integrated cross-section and time-series demand system. The study consists of three steps. First, a cross-section analysis is performed on data from household budget surveys. At this stage, the problem of 'zero expenditures' is solved. The cross-section results are transformed into variables for use in the time-series system of demand. Then, this demand system is built and estimated. Some results for Italy concerning both the cross-section and the time-series analyses are presented.
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Bardazzi et al. (2001) studied this question.
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