Erich Battistin and Michele De Nadai, "Identification and Estimation of Engel Curves with Endogenous and Unobserved Expenditures", Journal of Applied Econometrics, Vol. 30, No. 3, 2015, pp. 487-508. The data used in the paper are available in the file bn-data.csv, which is a comma separated ASCII file in DOS format. This file is zipped in bn-data.zip. Unix/Linux users should use "unzip -a". This is a selected sample from the 2010 wave of the Bank of Italy Survey on Households' Income and Wealth (SHIW), available at: http://www.bancaditalia.it/statistiche/indcamp/bilfait/dismicro The dataset includes 2311 observations, where the male of the household is aged between 25 and 56 and the reported total non-durable consumption is non-negative. The list of included variables is as follows: w: food budget shares, constructed as the ratio of reported food consumption over total non durable consumption lx: logarithm of total non durable consumption lz: logarithm of average male wages by region and population area north : dummy for living in the North center : dummy for living in the Center south : dummy for living in the South nokids: dummy for not having kids onekid: dummy for having one child morekids: dummy for having more than one child Please address any question to: Michele De Nadai Department of Statistical Sciences, University of Padova Via Cesare Battisti 241, Padova, Italy denadai [AT] stat.unipd.it