Table 1 Exemplary item definitions provided by the U.S. authors and forward translation template developed for the translation process

1

5018R1

In the past 7 days,

I felt accepted by other kids my age.

Never; Almost never; Sometimes; Often; Almost always

The idea of this item is to ask if the patient feels that other children the same age accept and approve of him/her as one of their own

To feel accepted: to feel approved or recognized; to feel “like a member of the group”

G1

G2

2

5058R1

In the past 7 days,

I was able to count on my friends.

Never; Almost never; Sometimes; Often; Almost always

The idea of this item is to ask if the patient felt that he/she could depend or rely on his/her friends

To count on: to depend or to rely on

G1

G2

3

5056R1

In the past 7 days,

I was able to talk about everything with my friends.

Never; Almost never; Sometimes; Often; Almost always

The idea of this item is to ask if the patient was capable of talking about all matters with his/her friends

To be able: to have the ability; can; to be capable

Everything: all matters; everything or particular of an aggregate or total; all

Friend: a person other than family, whom one knows, likes, and trusts

G1

G2

4

1147R1

In the past 7 days,

I was good at making friends.

Never; Almost never; Sometimes; Often; Almost always

The idea of this item is to ask if the patient was skilled at acquiring new friends

To be good at: to be skilled at; to employ successful strategies for

To make friends: to acquire new friends; to become friends with other people

G1

G2