Relationship between self-perceived noise intensity and sleep quality in noise-exposed work-ers—A mediating role of negative emotions
[Background]Studies on the relationships of environmental noise exposure with negative emo-tions and sleep quality have long been reported.Self-perceived noise intensity is not only related to environmental noise exposure,but also reflects an individual's susceptibility to noise;howev-er,few studies on self-perceived noise intensity,negative emotions,and sleep quality have been reported,and it is not clear whether negative emotions play a mediating role in the relationship between self-perceived noise intensity and sleep quality.[Objective]To analyze the mediating role of negative emotions(anxiety,depression,and stress)in the relationship between self-perceived noise intensity and sleep quality in noise-exposed workers,and to provide a scientific basis for addressing psychological problems and sleep quality induced by noise exposure.[Methods]Stratified cluster sampling was used to select noise-exposed workers from a large equipment manufacturing plant in Chengdu from May to June 2023,and demographic characteristics were investigated using a self-de-signed general information questionnaire;self-perceived noise intensity was reported by the study subjects as the noise intensity of their workplaces;sleep quality was synthesized from three indicators:night sleep duration,self-perceived sleep quality,and sleep-related symptoms;the Anxiety-Depression-Stress Scale(DASS-21 scale)was used to evaluate anxiety,depression,and stress of a worker.Structural equation modeling was used to analyze the pathways of negative emotions(anxiety,depression,and stress)between self-perceived noise intensity and sleep quality.[Results]The positive rates of negative emotions were 33.1%(anxiety symptoms,215/649),26.0%(depression symptoms,169/649),and 14.0%(stress symptoms,91/649),respectively in a total of 649 noise-exposed workers.Self-perceived noise intensity was positively cor-related with sleep quality score(r=0.218,P<0.001)and negative emotions(anxiety,depression,and stress)(r=0.167,0.145,0.167,P<0.001);sleep quality score was positively correlated with negative emotions(anxiety,depression,and stress)(r=0.512,0.447,0.513,P<0.001).The results of path analysis showed that the negative emotions(anxiety,depression,and stress)partially mediated between self-perceived noise intensity and sleep quality(β=0.123,P<0.001).Self-perceived noise intensity was positively correlated with negative emotions and sleep quality,and there was a path of self-perceived noise intensity → negative emotion → sleep quality(P<0.001),and the mediating effect accounted for 42.71%.[Conclusion]The positive rates of anxiety,depression,and stress are high among the noise-receiving workers in this manufacturing in-dustry,and negative emotions characterized by anxiety,depression,and stress partially mediate the relationship between self-perceived noise intensity and sleep quality.
noiseself-perceived noise intensitynegative emotionsleep qualitymediating rolestructural equation model
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