Variation of mortality after coronary artery bypass surgery in relation to hour, day and month of the procedure

Table 3 Mortality rates in 308 emergency coronary artery bypass procedures in relation to timing of surgery

	All patients n = 308	Weekday n = 278	Weekend n = 30	p value weekday vs. weekend	7 am-4 pm n = 273	After 4 pm n = 35	p value 7 am-4 pm vs. after 4 pm
Operative mortality	8.4%	8.3%	10%	0.73	8.1%	11.4%	0.52

ISSN: 1471-2261