. Author manuscript; available in PMC: 2018 Jun 1.

Published in final edited form as: Res Nurs Health. 2017 Mar 15;40(3):197–205. doi: 10.1002/nur.21791

Table 3. Frequency, Proportion, and Rate of Operational Failures (OF) by Category (N=27,298).

Category of OF	Frequency	% of Total OFs	Rate of OF per Shift^a
Equipment/ Supplies	7164	26.24	1.59
Information/ Communication	4861	17.81	1.08
Medication	4765	17.46	1.06
Other	4155	15.22	0.92
Staffing/ Training	4082	14.95	0.90
Physical Unit/ Layout	2271	8.32	0.50
Total	27298	100.00	6.07

Denominator = OFs in all 4,497 12-hour shifts