Table 2.

Observed intraoperative distraction (total and frequency) and interference per disruption source.

Intraoperative disruption source		Observed intraoperative distractions					Interference
		n	%	Total cases	Max per case	Per hour	Average interference, 1–9 (std. deviation)	Total interference
1.	People entering/exiting	380	42.8	46	18	4.95	2.9 (1.34)	1102
2.	Phone/bleep	72	8.1	34	5	0.93	2.3 (1.62)	165
3.	Case irrelevant communication (CIC)	251	28.3	42	13	3.27	3.9 (1.41)	979
4.	Equipment issues/failure	32	3.6	7	3	0.41	6.8 (1.23)	218
5.	Work environment/ergonomic	32	3.6	16	2	0.41	4.3 (2.44)	137
6.	Movement	89	10	33	6	1.15	2.4 (1.32)	213
7.	Procedural interruption	10	3.3	12	4	0.39	6.5 (1.24)	195