The following questionnaire asks about your first child or about your relationship with that child.

1) Please tell us your age. Please enter ◯ in the corresponding item.

( ) 15 - 19, ( ) 20 - 24, ( ) 25 - 29, ( ) 30 - 34, ( ) 35 - 39, ( ) 40 - 44, ( ) 45 - 49

2) How old is your first child? Please enter ◯ in the corresponding item.

( ) 0-year-old, ( ) 1 year old, ( ) 2 years old, ( ) 3 years old, ( ) 4 years old, ( ) 5 years old, ( ) 6 years old and older

3) When did you have a hard time physically and mentally after childbirth? Please enter ◯ at the following times. You can select more than one.

( ) Less than one month, ( ) 1 month, ( ) 2 month, ( ) 3 month, ( ) 4 month, ( ) 5 month

( ) 6 month, ( ) 7 month, ( ) 8 month, ( ) 9 month, ( ) 10 month, ( ) 11 month

( ) 1 year old, ( ) 2 year old, ( ) 3 year old, ( ) 4 year old, ( ) 5 year old, ( ) 6 year old

4) What was the reason why you were physically and mentally difficult after childbirth? Please enter ◯ at the following times. You can select any number of them.

( ) There was no person to consult.

( ) I couldn’t balance housework and childcare.

( ) No one helped with childcare.

( ) The child didn’t stop crying.

( ) I struggled with sleep deprivation.

( ) I didn’t know a childcare method.

( ) I couldn’t produce breastmilk.

( ) I didn’t feel well.

( ) My husband did not understand.

( ) I abused my child.

( ) My child was a handful.

( ) My husband did not help me with childcare.

( ) I didn’t have time for myself.

( ) I had to work for financial reasons.

( ) I could not get the understanding from my family other than my husband.

( ) Other

5) Have either you or your husband (person with whom you have an intimate relationship) performed the following actions towards your first child?

Please enter ◯ for actions you took towards your child and ◎ for actions taken by your husband (person with whom you have an intimate relationship).

( ) Hitting, ( ) Kicking, ( ) Pinching, ( ) Punching, ( ) Shaking violently

( ) Swinging around, ( ) Biting , ( ) Squeezing, ( ) Soaking in water, ( ) Burning with fire

( ) Strangle, ( ) Do not give food or milk, ( ) Do not change clothes

( ) Do not let him/her go to school, ( ) Leave him/her at a dangerous place

( ) He/she is sick but do not take him/her to the hospital., ( ) Lock up at home