Julianna Berthe Leijssen1, Marieke Brigitte Snijder2, Erik Johan Timmermans3, Ellen Generaal4, Karien Stronks5, Anton Eduard Kunst6. 1. Department of Public Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health Research Institute, Meibergdreef 9, PO Box 22660, 1100 DD, Amsterdam, the Netherlands. Electronic address: j.b.leijssen@amc.uva.nl. 2. Department of Public Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health Research Institute, Meibergdreef 9, PO Box 22660, 1100 DD, Amsterdam, the Netherlands; Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health Research Institute, Meibergdreef 9, Amsterdam, the Netherlands. Electronic address: m.b.snijder@amc.uva.nl. 3. Department of Epidemiology and Biostatistics, Amsterdam UMC, VU University Medical Center, Amsterdam Public Health Research Institute, de Boelelaan, 1117, Amsterdam, the Netherlands. Electronic address: ej.timmermans@vumc.nl. 4. Department of Psychiatry, Amsterdam UMC, VU University Medical Center, Amsterdam Public Health Research Institute, de Boelelaan, 1117, Amsterdam, the Netherlands; GGZ InGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, Amsterdam, the Netherlands. Electronic address: E.Generaal@ggzingeest.nl. 5. Department of Public Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health Research Institute, Meibergdreef 9, PO Box 22660, 1100 DD, Amsterdam, the Netherlands. Electronic address: k.stronks@amc.uva.nl. 6. Department of Public Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health Research Institute, Meibergdreef 9, PO Box 22660, 1100 DD, Amsterdam, the Netherlands. Electronic address: a.kunst@amc.uva.nl.
Abstract
BACKGROUND: Although there is growing evidence that depressed mood is affected by road traffic noise, previous results are not fully consistent. Furthermore, to our knowledge, no previous research has assessed ethnic and socioeconomic inequalities in the association of noise exposure with depressed mood. OBJECTIVE: To investigate the association between road traffic noise with depressed mood and to determine to what extent this association varies between ethnic and socioeconomic groups. METHOD: We investigated cross-sectional data collected between 2011 and 2015 from 23,293 HELIUS participants (18-70 years) living in Amsterdam. Our study included five different ethnic groups (Dutch, Moroccan, Turkish, South-Asian Surinamese and African Surinamese origin). All respondents were linked by their residential postal code to geographic data on road traffic noise levels (24 h noise average in A-weighted decibels [dB(A)]). Noise was categorized into five categories (45-54 dB(A), 55-59 dB(A), 60-64 dB(A), 65-69 dB(A), ≥70 dB(A)) and high noise exposure was defined as noise levels ≥65 dB(A). Depressed mood was defined as a sum-score of ≥10 on the 9-item Patient Health Questionnaire (PHQ-9). Logistic regression was performed to assess the relationship between road traffic noise and depressed mood. Multilevel analyses were used to take into account the clustering of observations within neighbourhoods. Lastly, logistic regression analyses were applied to estimate relative risks for depressed mood per different ethnic and socioeconomic groups exposed to high noise exposure ≥65 dB(A) compared to <65 dB(A). Analyses were adjusted for individual- and neighbourhood-level confounders. RESULTS: Exposure to ≥70 dB(A) compared to the reference group of 45-54 dB(A) showed a significant positive association with depressed mood (OR: 1.65, 95% CI 1.10, 2.48). Participants exposed to 60-64 dB(A) showed a significantly lower odds ratio of 0.82 (95% CI 0.70, 0.97) compared to the reference group. We observed no differences between ethnic groups in the association of high noise exposure ≥65 dB(A) with depressed mood. Regarding socioeconomic groups, results were different for the medium-low educated group and unemployed group only. CONCLUSION: This study adds new evidence regarding a positive association between high road traffic noise exposure and depressed mood in residential settings. We found no evidence for systematic ethnic or socioeconomic inequalities regarding this association.
BACKGROUND: Although there is growing evidence that depressed mood is affected by road traffic noise, previous results are not fully consistent. Furthermore, to our knowledge, no previous research has assessed ethnic and socioeconomic inequalities in the association of noise exposure with depressed mood. OBJECTIVE: To investigate the association between road traffic noise with depressed mood and to determine to what extent this association varies between ethnic and socioeconomic groups. METHOD: We investigated cross-sectional data collected between 2011 and 2015 from 23,293 HELIUSparticipants (18-70 years) living in Amsterdam. Our study included five different ethnic groups (Dutch, Moroccan, Turkish, South-Asian Surinamese and African Surinamese origin). All respondents were linked by their residential postal code to geographic data on road traffic noise levels (24 h noise average in A-weighted decibels [dB(A)]). Noise was categorized into five categories (45-54 dB(A), 55-59 dB(A), 60-64 dB(A), 65-69 dB(A), ≥70 dB(A)) and high noise exposure was defined as noise levels ≥65 dB(A). Depressed mood was defined as a sum-score of ≥10 on the 9-item Patient Health Questionnaire (PHQ-9). Logistic regression was performed to assess the relationship between road traffic noise and depressed mood. Multilevel analyses were used to take into account the clustering of observations within neighbourhoods. Lastly, logistic regression analyses were applied to estimate relative risks for depressed mood per different ethnic and socioeconomic groups exposed to high noise exposure ≥65 dB(A) compared to <65 dB(A). Analyses were adjusted for individual- and neighbourhood-level confounders. RESULTS: Exposure to ≥70 dB(A) compared to the reference group of 45-54 dB(A) showed a significant positive association with depressed mood (OR: 1.65, 95% CI 1.10, 2.48). Participants exposed to 60-64 dB(A) showed a significantly lower odds ratio of 0.82 (95% CI 0.70, 0.97) compared to the reference group. We observed no differences between ethnic groups in the association of high noise exposure ≥65 dB(A) with depressed mood. Regarding socioeconomic groups, results were different for the medium-low educated group and unemployed group only. CONCLUSION: This study adds new evidence regarding a positive association between high road traffic noise exposure and depressed mood in residential settings. We found no evidence for systematic ethnic or socioeconomic inequalities regarding this association.
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