Table 1 The five items of the GIPD scale. The wordings of the questions vary slightly, depending on the rater (patient, parent, physician).

1. Think about the past seven days. How difficult have your mornings been?

1. Think about the past seven days. How difficult have the mornings of your child been? Please take into account all information you may have obtained from persons who have also seen your child in the morning.

1. Considering the past seven days, how difficult have the mornings of your patient been? Please include all information provided by the patient and information you may have been able to obtain from other persons who have seen your patient in the morning.

2. Think about the past seven days. How difficult has your time spent in school been?

2. Think about the past seven days. How difficult has the time spent in school been for your child? Please take into account all information you may have obtained from persons who know your child (e.g. parents, teachers, nurses, other caregives).

2. Considering the past seven days, how difficult has the time spent in school been for your patient? Please include all information provided by the patient and information you may have been able to obtain from other persons who know your patient (e.g. parents, teachers, nurses, other caregives).

3. Think about the past seven days. How difficult has your time spent doing homework been?

3. Think about the past seven days. How difficult has the time spent doing homework been for your child? Please take into account all information you may also have obtained from persons who know your child (e.g. parents, teachers, nurses, other caregives).

3. Considering the past seven days, how difficult has the time spent doing homework been for your patient? Please include all information provided by the patient and information you may have been able to obtain from other persons who know your patient (e.g. parents, teachers, nurses, other caregives).

4. Think about the past seven days. How difficult have your evenings been?

4. Think about the past seven days. How difficult have the evenings of your child been? Please take into account all information you may have obtained from persons who have also seen your child in the evening.

4. Considering the past seven days, how difficult have the evenings of your patient been? Please include all information provided by the patient and information you may have been able to obtain from persons who have seen your patient in the evening.

5. Think about the past seven days. How difficult have your days and nights been generally?

Did anyone help you with the answers? (yes/no)

5. Think about the past seven days. How difficult have the days and nights of your child been generally? Please take into account all information you may have obtained from other persons who also know your patient (e.g. parents, teachers, nurses, other caregives).

5. Considering the past seven days, how difficult have the days and nights of your patient been generally? Please include all information provided by the patient and information you may have been able to obtain from other persons who know your patient (e.g. parents, teachers, nurses, other caregives).