inconsistent parameter and elasticity estimates. Poi (2012) introduced the Stata command
quaids to estimate quadratic almost-ideal demand systems, or QUAIDS (Banks, Bundell and
Lewbel, 1997), although without the possibility to address censoring. In this paper, we
introduce the command quaidsce to consistently estimate the QUAIDS in the presence of
zero observations, using the two-step procedure proposed by Shonkwiler and Yen (1999) …