Katila M, et al. - In this prospective study involving 1,388 infants from the CHILD-SLEEP birth cohort, researchers investigated the prevalence of snoring during infancy and the prenatal and postnatal risk factors for this condition. Investigators found that habitual snoring prevalence was 3.2% at 3 months of age and 3.0% at 8 months of age, and snoring infants had more sleeping difficulties at those ages, with 3.11 and 4.63 odds ratios (ORs) respectively. They observed that snoring infants slept for a shorter period of time at 3 months, and their sleep was more restless. Parental snoring and maternal smoking were significantly correlated with infant snoring at 3 and 8 months in ordinal logistic regression models, while formula feeding and dummy use were associated only at 3 months with infant snoring. Overall, they concluded that the risk of snoring increased with parental snoring and maternal smoking. It also seemed that infants who snored suffered more from other difficulties in sleep.