Table 2.

Hours of work and sleep recorded among 38 702 study months

Characteristics	Mean (standard deviation) in hours
Weekly work hours	60.0 (16.1)
Hours engaged in patient care	44.2 (17.9)
Additional weekly work hours related to programme	5.2 (5.6)
Additional weekly hours moonlighting	0.60 (2.6)
Shifts of extended duration per month	1.6 (2.6)
Nightly sleep duration	6.9 (1.0)
Sleep duration on shifts of extended duration	2.5 (1.8)
Proportion (%) of extended shifts without sleep	14% (n=2068/14 319)
Days off per month	6.1 (2.2)