... reports and polysomnography recording of snoring frequency [39] In addition, although polysomnography recording was the standard method for recording of snoring frequency, it maybe not appropriate ... food or drug allergy (yes/no) Family history of SDB was investigated using the question: “Do the family members (including parents, grandparents, and siblings) habitually snore (yes/no) or were ... being receiving medication with likely effects on sleep, such as psychostimulants, anticonvulsants, or antihistamines Finally, 17 (0.1%) children with missing information on frequency of snoring...