摘要：This paper examines the determinants of ICT expenditures in 17 OECD countries, including the Czech Republic,looking at Household Expenditures Surveys data. Previous OECD work has shown that average ICTexpenditures vary with the gender and the educational attainments of the family head and with the lifecycleand the income of the household. Average data, however, hide the interactions among these factors that occurat the level of households. In order to control for these interactions, this paper analyses the determinants ofICT expenditures based on the household-level data (micro data).Using a double-hurdle model (a probit model to estimate whether a consumer will spend on a certain goodor service or not, followed by a truncated regression model that estimates how much to spend on that good orservice) applied on micro data collected by households budget surveys from 16 OECD countries, the paper analysesthe effects of determinants on ICT expenditures. The paper shows that the effects of various determinantsbetween communication services and information technology goods are markedly different. Some determinants,in particular income and presence of children, have significant and relatively similar effects, at the level of moreelementary expenditures components (IT goods, IT services, communication goods and communication services).It also shows that the effects of other determinants (such as education level, geographical area, age, or lifecycle stage) are less similar across countries or between ICT goods and services.
关键词：ICT expenditures by households; determinants; micro data analysis
