Time of Day When Nurses Reported Difficulties Remaining Alert (Both Samples)
![Text Description is below the image.](Rogers-31.jpg)
Bar graph showing the time of day when nurses reported difficulties remaining alert by number of shifts. The results for feeling drowsy were:
24 (12 am): 160
02 (2 am): 580
04 (4 am): 530
06 (6 am): 70
08 (8 am): 60
10 (10 am): 105
12 (12 pm): 90
14 (2 pm): 300
16 (4 pm): 180
18 (6 pm): 10
20 (8 pm): 10
22 (10 pm): 30
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