The composition of elder and younger siblings who live with the surveyed child.
If the surveyed child is one of the twins or triplets, and does not have other siblings, he/she is categorized in the group of "elder sibling(s) only."
If the surveyed child has siblings whose ages are unknown, such siblings are categorized as "elder siblings" if they have been counted since the 1st survey.
Those who take care of the subject child on a daily basis, regardless of the hours
Major caregivers during the day
Those who spend the longest hours with the surveyed child during weekdays, among the above usual caregivers
Major nursing patterns
The combination of the "major caregivers during the day," over the periods of the 1st through 4th surveys
|(3)||Employed (including those taking childcare leave or other leaves)
1st, 2nd and 4th surveys:
Total of full-time workers, part-time workers, self-employed workers, family workers, pieceworkers at home, and others
Those engaged in work with income, or with the intention of receiving income
|(4)||Impressions from child rearing (satisfactions from child rearing, etc.)
"Satisfactions from child rearing" and "burdens and worries about child rearing" are in regards to the surveyed children.