The association between night shift work and hypertension among workers at a construction company in jakarta

Introduction: Night shift work, which can cause circadian misalignment, may be associated with increased blood pressure. The purpose of this research was to find out the prevalence of hypertension and the associated factors of hypertension among night shift and day shift workers at a construction company in Jakarta. Methods: The data used in this study was taken from records of general medical checkup which was held in August 2019. Data of 107 male workers (28 day shift workers, 79 night shift workers) were gathered. Results: The prevalence of hypertension in night shift workers (59.5%) was higher compared to that in the day shift workers (17.9%). Systolic blood pressures (SBPs) of the night shift workers (mean SBP = 137.58; SD = 15.05; CI 95% = 134.58-141.32) were significantly higher compared to day shift workers' (mean SBP = 122.14, SD = 13.24; CI 95% = 117.01-127.07). Diastolic blood pressures (DBPs) of night shift workers (mean DBP = 84.90; SD = 10.59; CI 95% = 82.53-87.27) were also significantly higher than day shift workers' (mean DBP = 76.54; SD = 10.85; CI 95% = 72.33-80.74). According to multiple logistic regression analysis, workers with night shifts (OR = 7.47; CI 95% = 2.48-22.51) and overweight (OR = 2.73; CI 95% = 1.04-7.18) were significantly associated with hypertension compared to day shift workers and normal weight workers, respectively, after adjusted by other covariates. Conclusion: Night shift workers faced higher risk of hypertension compared to day shift workers, particularly for those who were overweight.