Expenditure Survey to consider pet ownership and expenditures for single and married households. Households with very young … children are less likely to own pets and have lower pet expenditures, showing a substitute relationship. Households with older … children are more likely to own pets, suggesting a complementary relationship. However, households with more children show …

analysis and k-means method), enabling to classify EU households according to the features of their indebtedness. Moreover, in … order to define the quantitative relationships between the level and structure of households’ indebtedness and the frequency …