EuroQol Toddler and Infant Populations (EQ-TIPS): Age-Related Differences in Performance.

There is an age-related difference in the reporting of items linked to developmental milestones (movement, play, and communication) with most problems reported in the 36-48-month group when deviation from peers and continued dependence on caregivers is notable. Consideration should be given to including broader examples of play in the EQ-TIPS. Redefining the items to represent social communication and/or (social) emotion, rather than communication and social interaction, may be warranted. Future research should explore the psychometric performance of items to further inform item inclusion and/or revision.