Associations between self-reported sleep disturbance and environmental noise based on reanalyses of pooled data from 24 studies.

This study establishes functions that specify self-reported sleep disturbance in relation to the exposure to nighttime transportation noise, by reanalyzing pooled data from previous studies. Results are based on data from 28 original datasets obtained from 24 field studies (4 studies collected data regarding 2 sources) including almost 23,000 participants exposed to nighttime levels ranging from 45 to 65 dB. Functions are presented that give the percentage highly sleep disturbed, sleep disturbed, and (at least) a little sleep disturbed people due to aircraft, road traffic, and railway noise in relation to the average nighttime outdoor exposure level at the facade most exposed to the source concerned. These functions show that at the same average nighttime noise-exposure level, aircraft noise is associated with more self-reported sleep disturbance than road traffic, and road traffic noise is associated with more sleep disturbance than railways. The association of noise-induced sleep disturbance with age has an inverse U-shape, with the strongest reaction found between 50 and 56 years of age.