|  | First Survey | Second Survey | Third Survey | 
| Caregivers |  |  |  | 
| Family members living together |  |  |  | 
| Exchange visits to grandparents' houses |  |  |  | 
| Awareness to the dwelling space |  |  |  | 
| Moving & extension to houses |  |  |  | 
| Dwelling type |  |  |  | 
| Parents |  |  |  | 
|  | Employment status |  |  |  | 
| Company size |  |  |  | 
| Occupation |  |  |  | 
| Status of taking child care leave |  |  |  | 
| Working time |  |  |  | 
| Commuting time |  |  |  | 
| Fathers working away home |  |  |  | 
| Educational background |  |  |  | 
| Share of childcare and house chores |  |  |  | 
| Fathers on their day off |  |  |  | 
| Eating habits |  |  |  | 
| Time to spend with children |  |  |  | 
| Smoking |  |  |  | 
| Income |  |  |  | 
| Monthly expenditure on child rearing |  |  |  | 
| Awareness of child rearing |  |  |  | 
| Advantages of having/rearing child(ren) |  |  |  | 
| Burdens of having/rearing child(ren) |  |  |  | 
| Concerns or worries about child rearing |  |  |  | 
| Whom to ask for advice in childcare |  |  |  | 
| Reason(s) not asking for advice |  |  |  | 
| How do you want your child(ren) to grow up? |  |  |  | 
| Breast milk |  |  |  | 
| About the subject child(ren) |  |  |  | 
|  | Rules about meals |  |  |  | 
| Concerns about children's eating behaviors |  |  |  | 
| Rules on giving snacks to children |  |  |  | 
| Wakeup time |  |  |  | 
| Bedtime |  |  |  | 
| Nap frequency |  |  |  | 
| Whom to play with |  |  |  | 
| Favorite forms of play |  |  |  | 
| Hours spent watching TV |  |  |  | 
| Usual play areas |  |  |  | 
| Friends to play with of their age in the neighborhood |  |  |  | 
| Paid lessons |  |  |  | 
| What the subject child(ren) can do now |  |  |  | 
| Illness and injuries |  |  |  | 
| Accidents |  |  |  | 
| Height and weight |  |  |  |