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imperfect instrumental variables

Assessing the Causal Impact of Tobacco Expenditure on Household Spending Patterns in Zambia

Grieve Chelwa and Corné van Walbeek
This paper adds to the literature on the crowding out effect of tobacco expenditure in two ways. Firstly, the paper uses expenditure data from a low income sub-Saharan African country, Zambia, where most households are poor. Secondly, unlike previous studies, we relax the exclusion restriction and...
Aug 2014
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