Shift work involving disruption of circadian rhythms has been classified as a probable cause of human cancer by the International Agency for Research on Cancer, based on limited epidemiologic evidence and abundant experimental evidence. The authors investigated this association in a population-based prospective cohort study of Chinese women. At baseline (1996-2000), information on lifetime occu...

This study examined the impact of night shift on six dimensions of mood. The efficacy of a range of personality, behavioural, and social/organizational predictors of these responses was also examined. Thirty-five female student nurses were studied during their first period of night work. ANOVAs indicated that only fatigue-inertia and vigour-activity were significantly affected by night work. Mu...

BACKGROUND AND OBJECTIVES Irregular and poor quality sleep is common in business process outsourcing (BPO) employees due to continuous shift working. The influence of this on the cardiac autonomic activity was investigated by the spectral analysis of heart rate variability (HRV). METHODS 36 night shift BPO employees (working from 22:00 to 06:00h) and 36 age and sex matched day shift BPO emplo...

Background and aim Driving after a night shift imposes a risk on health care professionals and other road users. The aim of this study was to measure psychomotor performance of driving of night shift nurses compared to day-shift nurses. Methods Forty-seven volunteer female nurses working at Sina hospital in Tehran, Iran, with a call in all departments of hospital, participated in this study (...

I’m awake. Had my anchor sleep, but I’m still groggy and trying to be civil to the people around me, the ones that really care about me, my family. It’s the first morning after my last night shift as a full-time emergency physician. I’m not retiring, just done with nights and slowing down. “No nights after age (blank)” is not a group policy where I work... it’s my own choice, and thankfully sup...

To the Editor:—The article of Lienhart et al. 1 must be applauded. Because of the authors’ careful and high-quality methodology, this work—begun in 1996 and covering an entire nation—was able to estimate anesthesia-related mortality in France. This work confirms the critical role of cardiac disease, aging, emergency care and hemorrhage in mortality related to anesthesia. Perhaps more importantl...

To the Editor:—The article of Lienhart et al. 1 must be applauded. Because of the authors’ careful and high-quality methodology, this work—begun in 1996 and covering an entire nation—was able to estimate anesthesia-related mortality in France. This work confirms the critical role of cardiac disease, aging, emergency care and hemorrhage in mortality related to anesthesia. Perhaps more importantl...

BACKGROUND The aims of this study were to examine the relationship between night shift work and sleep, to investigate the correlations with various biomarkers that show the influence of sleep on obesity, and ultimately, to analyze factors that have an impact on obesity. METHODS This study used data from the National Survey of Midlife Development in the United States II (MIDUS II study) and th...

To evaluate the effects of shift work and race/ethnicity on the diurnal rhythm of blood pressure and urinary catecholamine excretion of healthy female nurses, 37 African American women and 62 women of other races underwent ambulatory blood pressure monitor and urine collection for 24 hours that included a full work shift: day shift (n=61), evening shift (n=11), and night shift (n=27). Awake and...

Night-shift workers are at high risk of drowsiness-related motor vehicle crashes as a result of circadian disruption and sleep restriction. However, the impact of actual night-shift work on measures of drowsiness and driving performance while operating a real motor vehicle remains unknown. Sixteen night-shift workers completed two 2-h daytime driving sessions on a closed driving track at the Li...