Table 2.

Time spent by sleep-deprived anesthesiology residents in sleepy behaviors during a 4-hour simulated laparoscopic operation^*

Subject	(Minutes (% time of entire operation)
4	77.7 (32.4%)
12	60.2 (25.1%)
6	26.7 (11.1%)
9	12.5 (5.2%)
7	11.4 (4.8%)
5	6.6 (2.8%)
3	3.1 (1.3%)
11	2.1 (0.9%)
2	0
8	0
10	0

*“Sleepy behaviors” are defined as nodding and eyes closing (awakened head bob); nodding and eyes closing (not awakened); or eyes closed with no movement (sound asleep). Data from reference 6.