Table 2 Overview of enrolment, interventions and assessments

Enrolment

 Eligibility screen

X

 Registration

X

 Informed consent

X

 Allocation

X

Interventions

 Intervention group

X

 Waitlist control group

X

Assessments

 Demographic variables (parent)

X

 Control variables (parent)

X

X

 Quality of life (parent and child)

X

X

X

 Sibling adjustment to the disability of the brother or sister (parent and child)

X

X

X

 Self-esteem (child)

X

X

X

 Perceived social support (child)

X

X

X

 Sibling relationship (parent and child)

X

X

X

 Coping skills (child)

X

X

X

 Parent-child relationship (parent)

X

X

X

 Social validity (parent and child)

X

X

 Subjective evaluation (parent and child)

X

 Parenting self-efficacy (parent)

X

X

X

 Child behavior (parent)

X

X

X