Individual-level noise exposure and its association with sleep quality and duration: A cross-sectional study using...

Area of Science:

• Environmental Health
• Epidemiology
• Sleep Science

Background:

• Urban noise pollution is a growing public health issue.
• Limited studies link individual dynamic noise exposure to sleep outcomes.
• Understanding noise impact on sleep quality and duration is crucial.

Purpose of the Study:

• To investigate the association between individual-level dynamic noise exposure and sleep quality/duration in Hong Kong.
• To quantify the risk of poor sleep associated with varying noise levels.
• To assess the public health implications of environmental noise on sleep.

Main Methods:

• Cross-sectional survey in Hong Kong with 763 participants.
• Real-time noise exposure recorded using portable noise sensors.
• Sleep quality assessed using the Pittsburgh Sleep Quality Index; logistic regression used for analysis.

Main Results:

• Higher noise exposure (L24, Ld, Ln) was significantly associated with poor sleep quality (ORs ranging from 1.51 to 1.65).
• Elevated noise levels correlated with increased risk of shorter nocturnal sleep duration (< 7h) (ORs ranging from 1.50 to 1.87).
• Each 10 dB(A) increase in L24 and Ln was linked to a 24-29% increase in poor sleep quality and a 24% reduction in sleep duration.

Conclusions:

• Environmental noise exposure is a significant factor affecting sleep quality and duration.
• Findings indicate a substantial public health burden related to noise pollution in urban settings.
• Individual-level noise monitoring is essential for understanding and mitigating sleep disturbances.