Objective

Explore Sleep duration, sleep quality, and their association with hypertension of petroleum workers.

Design

Setting and participants multistage, random-cluster sampling design was used to select study samples, conducted a cross-sectional survey of 1,500 petroleum workers in 6 oil field bases in Karamay, Xinjiang. Unified blood pressure test by occupational physicians at the central hospital. Excluding 53 unfinished questionnaires and 27 unfinished blood pressure tests, 1420 participants were finally included as the subjects.

Outcomes

Main outcome measures were defined by dividing the referral process into three phases: (1) Ascertainment of hypertension; (2) Subjective sleep status was evaluated by the standard Pittsburgh Sleep Quality Index (PSQI); (3) The logistic regressions analysis was performed to evaluate the associations of sleep duration and sleep quality with hypertension.

Results

First, short sleep duration(OR=1.64, 95% CI=1.16-2.31) and poor sleep quality (OR=3.35, 95% CI=2.40-4.67)) exerted a statistically significant effect on hypertension. Second, stratified analysis, (1) stratified by gender, Short sleep duration and poor sleep quality in females and males can increase the risk of hypertension, the OR values of females were 2.05 (95% CI:1.35-3.12) and 5.59 (95% CI:3.67-8.49), respectively. The OR values of males were 2.00 (95% CI:1.20-3.34) and 2.37 (95% CI:1.42-3.95), respectively (2) stratified by age, Among short sleepers, adults aged 30-44 years had higher adjusted odds of hypertension (OR: 2.19, 95% CI: 1.34-3.59) than older adults aged 45-65 years (OR: 2.70, 95%  CI:1.60-4.54). Among poor sleepers, the risk of hypertension increases with age, the OR values were: 3.43 (95% CI: 1.52-7.74); 4.06 (95% CI: 2.48-6.62); 4.35 (95% CI: 2.60-7.27). (3) Stratified by shift work, we observed slightly increased relations of hypertension prevalence with the extension of shift work compared with non-shift workers, the OR (95% CI) were 2.28 (1.20-4.35) and 3.86 (2.08-7.15) for shift workers with short sleep duration and poor sleep quality, respectively.

Conclusion

Short sleep duration and poor sleep quality are associated with hypertension prevalence among petroleum workers.

Subjective sleep status in the previous month was evaluated by the standard Pittsburgh Sleep Quality Index (PSQI).