Volume 4, Issue 3 (August 2025)
Health Science Monitor 2025, 4(3): 243-251 |
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Mohammadi Gharahassanlou M, Hajaghazadeh M, Moutab Sahihazar Z. Sleep Quality, Daytime Sleepiness, and Chronotype Profile of Municipal Street Sweepers in Urmia, Iran: Associations with Night Shift Work and Socio-Demographic Factors. Health Science Monitor 2025; 4 (3) :243-251
URL: http://hsm.umsu.ac.ir/article-1-246-en.html
URL: http://hsm.umsu.ac.ir/article-1-246-en.html
Department of Occupational Health, School of Public Health, Urmia University of Medical Sciences, Urmia, Iran
Abstract: (35 Views)
Background Municipal street sweepers perform physically demanding work, often during night shifts, with occupational hazards impacting sleep and circadian health. This study aimed to assess sleep quality, daytime sleepiness, and chronotype distribution among municipal street sweepers in Urmia, Iran, and to explore associations with socio-demographic and occupational factors.
Methods This cross-sectional study was conducted in 2022 with 135 municipal street sweepers in Urmia. Data were collected using the Pittsburgh Sleep Quality Index for sleep quality, the Epworth Sleepiness Scale for sleepiness, and the Morningness-Eveningness Questionnaire for chronotype. Descriptive statistics, independent samples t-tests, ANOVA, and ANCOVA were used for data analysis, with significance set at p < 0.05.
Results The majority of participants (92.6%) worked night shifts. Exceptionally high poor sleep quality (94.1%, PSQI > 5) and excessive daytime sleepiness (93.3%, ESS ≥ 10; mean ESS 19.40 ± 6.4) were observed. The predominant chronotype was intermediate (72.6%), then morning (16.3%), and evening (11.1%). Night shift workers reported significantly poorer sleep quality (mean PSQI 10.63 ± 3.33) compared to day shift workers (mean PSQI 8.40 ± 2.37, p = 0.040). Higher daytime sleepiness was significantly associated with longer work experience (>10 years, p = 0.032) and being single (p = 0.007). Chronotype was not significantly related to overall PSQI or ESS scores.
Conclusion Municipal street sweepers in Urmia, predominantly working night shifts, experience extremely high levels of poor sleep quality and severe daytime sleepiness. These findings highlight a critical occupational health concern, underscoring the need for targeted interventions for their sleep health and well-being.
Methods This cross-sectional study was conducted in 2022 with 135 municipal street sweepers in Urmia. Data were collected using the Pittsburgh Sleep Quality Index for sleep quality, the Epworth Sleepiness Scale for sleepiness, and the Morningness-Eveningness Questionnaire for chronotype. Descriptive statistics, independent samples t-tests, ANOVA, and ANCOVA were used for data analysis, with significance set at p < 0.05.
Results The majority of participants (92.6%) worked night shifts. Exceptionally high poor sleep quality (94.1%, PSQI > 5) and excessive daytime sleepiness (93.3%, ESS ≥ 10; mean ESS 19.40 ± 6.4) were observed. The predominant chronotype was intermediate (72.6%), then morning (16.3%), and evening (11.1%). Night shift workers reported significantly poorer sleep quality (mean PSQI 10.63 ± 3.33) compared to day shift workers (mean PSQI 8.40 ± 2.37, p = 0.040). Higher daytime sleepiness was significantly associated with longer work experience (>10 years, p = 0.032) and being single (p = 0.007). Chronotype was not significantly related to overall PSQI or ESS scores.
Conclusion Municipal street sweepers in Urmia, predominantly working night shifts, experience extremely high levels of poor sleep quality and severe daytime sleepiness. These findings highlight a critical occupational health concern, underscoring the need for targeted interventions for their sleep health and well-being.
Type of Study: Research |
Subject:
Occupational Health
Received: 2025/06/18 | Accepted: 2025/07/19 | Published: 2025/08/19
Received: 2025/06/18 | Accepted: 2025/07/19 | Published: 2025/08/19
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