The effect of the number of aircraft noise events on sleep quality |
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| Affiliation: | 1. Netherlands Organization for Applied Scientific Research (TNO), Department of Urban Environment and Safety, P.O. Box 49, Delft 2600 AA, The Netherlands;2. National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, The Netherlands;1. Global Brain Health Institute, University of California, San Francisco (UCSF), San Francisco, CA, USA;2. Instituto de Estudos Avançados, Universidade de São Paulo (IEA/USP), São Paulo, SP, Brazil;3. Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil;4. Grupo de Epidemiologia Aplicada (GEA) do Programa de Pós-Graduação em Epidemiologia da Faculdade de Saúde Pública da Universidade de São Paulo, São Paulo, SP, Brazil;5. Faculdade de Saúde Pública, Universidade de São Paulo (FSP/USP), São Paulo, SP, Brazil;6. Programa de Pós-Graduação em Odontologia, Universidade Estadual de Ponta Grosa (UEPG), Ponta Grossa, PR, Brazil;1. University of Belgrade, Faculty of Transport and Traffic Engineering, Division of Airports and Air Traffic Safety, 305 Vojvode Stepe Street, 11000 Belgrade, Serbia;2. University of Belgrade, Faculty of Organizational Sciences, Department of Statistics, 154 Jove Ilica Street, 11000 Belgrade, Serbia;1. ARPAT – Environmental Regional Agency of Tuscany, Dept. of Lucca, Via Vallisneri 6, Lucca, Italy;2. IPCF–CNR Uos, Via G. Moruzzi 1, 56124 Pisa, Italy;3. Department of Physics, University of Siena, Via Roma 56, 53100 Siena, Italy;4. Department of Physics, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy;5. ARPAT – Environmental Regional Agency of Tuscany, Dept. of Pisa, Via V. Veneto 27, Pisa, Italy;1. Instrumentation and Applied Acoustics Research Group (I2A2), Technical University of Madrid, Building ETSI Topography, Rd. Valencia Km. 7, 28031 Madrid, Spain;2. Department of Physics, University of Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy;3. ARPAT – Environmental Regional Agency of Tuscany, Dept. of Lucca, Via Vallisneri 6, Lucca, Italy;4. IPCF – CNR UOS, Via G. Moruzzi 1, 56124 Pisa, Italy |
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| Abstract: | BackgroundBoth the WHO and the EC recommend the use of Lnight as the primary indicator for sleep disturbance. Still, a key question for noise policy is whether the prediction of sleep quality could be improved by taking the number of events into account in addition to Lnight.ObjectivesThe current paper investigates the association between sleep quality and the number of aircraft noise events. The first aim of this study was to investigate whether, for the purpose of predicting sleep quality measured by motility, the nummer of events is adequately represented in Lnight for the purpose of predicting sleep quality measured by motility. The second aim was to investigate whether the number of events at a given Lnight has an additional predictive value. In addition, it was explored whether the total number of events should be taken into account for the production of sleep quality, or only the number of events exceeding a certain sound pressure level.MethodsThis study is based on data of a field study among 418 people living within a range of 20 km from Amsterdam Airport Schiphol. The data from this study are well suited for this purpose, since for every subject both the number and the exposure level of events are available. Sleep quality was measured by motility, derived from actimeters worn on the wrist, and by self-reported sleep quality scored on a 11-point scale. Mixed linear regression models were built in a stepwise manner to predict sleep quality during a sleep period time.ResultsThe results show that, given a certain equivalent noise level, additional information on the overall number of events does not improve the prediction of sleep quality. However, the number of events above LAmax of 60 dB was related to an increase in mean motility, indicating lower sleep quality. No effect of number of events was found on self-reported sleep quality.ConclusionsThis study suggests that the number of events is more or less adequately represented in Lnight and only the number of high noise level events may have additional effects on sleep quality as measured by motility. This may be viewed as an indication that, in addition to Lnight, the number of events with a relatively high LAmax could be used as a basis for protection against noise-induced sleep disturbance. |
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| Keywords: | Aircraft noise Sleep disturbance Noise events |
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