Diagnostic accuracy of the Spanish version of the Pediatric Sleep Questionnaire for screening of obstructive sleep apnea in habitually snoring children

• The Spanish version of the Pediatric Sleep Questionnaire (PSQ) showed a good diagnostic test accuracy for screening obstructive sleep apnea (OSA) in children.
• Six items concerning respiratory symptoms showed the highest diagnostic accuracy.
• This subscale score identified correctly 89% of the children with OSA.

ObjectivesWe aimed to determine the diagnostic test accuracy of the Spanish version of the respiratory symptoms scale of the Pediatric Sleep Questionnaire (PSQ) in habitually snoring children for identifying obstructive sleep apnea (OSA).MethodsHabitually snoring children referred for polysomnography (PSG) were recruited. Parents answered the PSQ prior to PSG. Based on an apnea–hypopnea index (AHI) >1.0 in PSG, children were divided into OSA and primary snorers. Correlations to PSG indices and diagnostic test accuracy measures were calculated.ResultsOf the 83 (n = 53 males, mean age 9.5 ± 3.6 years) habitually snoring children included, 35 had OSA. The previously validated PSQ cutoff value of 0.33 showed a specificity of 0.72 and sensitivity of 0.78. The PSQ score correlated significantly with the AHI rs = 0.313 (p-value = 0.004). Six items of the PSQ were significantly different between cases and controls. A subscale constructed on these six PSQ items concerning respiratory symptoms showed a good sensitivity (0.886) and an excellent negative likelihood ratio (0.261). PSQ was able to identify 89% of the children with OSA correctly.ConclusionsThis version of the PSQ was able to identify children with OSA, separating them from those with primary snoring. The use of this simple, standardized questionnaire tool seems to be helpful and may improve clinical decision making in habitually snoring children.