Information were also collected about whether parents had concerns about their child’s speech, according to Parents Evaluation of Developmental Status (PEDS) which is a ten item questionnaire about general development.
Upplýsingum var einnig safnað um það hvort foreldrar höfðu áhyggjur af tali barna sinna samkvæmt Parents Evaluation of Developmental Status (PEDS) en það er tíu atriða spurningalisti um almenna þroskaframvindu.