The interviews for the sample survey of Italian household budgets in 2004 were conducted between February and July 2005.
The sampling scheme is the same as that used in the preceding survey in 2002 and the sample is of the same size: 8,012 households drawn from the registry office records of 344 towns, composed of 20,581 people, of which 13,341 income-earners. Under the sampling design, each household is assigned a weight inversely proportional to its probability of inclusion in the sample; the weights are subsequently modified to take account of non response, to increase the precision of the estimators, and to align the structure of the sample with that of the population in terms of certain characteristics.
