Health related quality of life trajectories and predictors following coronary artery bypass surgery

Table 1 Baseline characteristics of the study population

Demographic	Mean	(SD)	%
Age	65.5	(9.8)
Male sex			80
Currently in workforce			33
Currently has partner			74
Non-manual occupation			52
Years education	10.9	(2.5)
English main language spoken			85
Australian born			60
Lives with others			82
Cardiovascular disease risk factors
Hypertension			86
Diabetes mellitus			29
Cerebrovascular disease			14
Peripheral vascular disease			14
Chronic obstructive pulmonary disease			11
Past smoker			32
Current smoker			10
Body mass index	28.9	(4.6)
Cardiac
Previous cardiac surgery			11
Previous myocardial infarction			48
Family history of coronary artery disease			40
New York Heart Association functional class
I			28
II			42
III			28
IV			2
Reduced ejection fraction (EF < .55)			47
Operational/Post-operational
New cardiac arrhythmia			29
Red blood cell transfusion post-op			22
Pulmonary blood pressure	19.3	(5.1)
Number of distal anastomoses	2.9	(1.0)
Post-operative ventilation hours	8.3	(6.7)
Total time in intensive care (hours)	33.9	(18.8)
Length of stay in hospital (days)	7.1	(5.2)
Readmitted to hospital within 30 days discharge			12
Attended cardiac rehabilitation program			73
Number of cardiac rehabilitation sessions attended	4.6	(3.4)
Health related quality of life (SF-36)
Baseline physical component summary	36.6	(10.5)
Two month physical component summary^a	39.2	(8.1)
Six month physical component summary^b	45.4	(10.4)
Baseline mental component summary	46.8	(11.2)
Two month mental component summary^a	49.7	(11.0)
Six month mental component summary^b	50.6	(10.8)

ISSN: 1477-7525