“…In the case of the Netherlands, the survey was carried out during October only, and thus we do not include dummies to control for the month of the diary. The vector X ij includes personal and household characteristics (Hallberg and Klevmarken, 2003;Kalenkoski et al, 2005Kalenkoski et al, , 2009Kimmel and Connelly, 2007;Connelly and Kimmel, 2009;Gimenez-Nadal and Molina, 2013): age and its square, secondary and university education, the number of children under 18 in the household, household size, whether the youngest child is under 5, whether the youngest child is 5-12, whether the youngest child is 13-17, and civil status (ref. : not in couple).…”