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Slide Presentation of the 2007 Annual Meeting of AHRQ

Association of Errors with Overtime (ANA sample)

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Work Duration (hr)	Overtime	No. of Shifts > 1 error (%)	OR (p-value)
< 8.5	No	8/377 (2.1%)	1.00
< 8.5	Yes	64/2075 (3.1%)	1.34 (0.42)
> 8.5, <12.5	No	6/246 (2.4%)	1.00
> 8.5, <12.5	Yes	36/937 (3.8%)	1.53 (0.36)
> 12.5	No	6/360 (1.7%)	1.0
> 12.5	Yes	70/1263 (5.5%)	3.26 (0.005)
Total		191/5258

* Rogers, et al, 2004, Hospital Staff Nurse Work Hours and Patient Safety Health Affairs