Smoking status and survival: impact on mortality of continuing to smoke one year after the angiographic diagnosis of coronary artery disease, a prospective cohort study

Table 1 Baseline characteristics stratified by smoking status at angiography (Cohort A , unmatched)

Clinical characteristics	Non-smoker	Smoker	p-value
No. (%)	8750 (77.2)	2584 (22.8)
Age, Mean (SD)	66.4 (10.4)	58.7 (9.8)	<0.001
Female (%)	21.8	22.4
Diabetes Mellitus (%)	22.9	19.6	<0.001
Hyperlipidemia (%)	78.5	79.2
Pulmonary disease (%)	12.6	14.0
Heart Failure (%)	8.7	9.1
Hypertension (%)	70.5	62.6	<0.001
CVD (%)	5.9	4.1	<0.001
PVD (%)	5.9	7.2	0.015
ST-Elevated MI (%)	21.5	38.2	<0.001
Non ST-Elevated MI (%)	21.9	29.3	<0.001
Prior MI (%)	22.4	24.9	0.008
Prior PCI (%)	4.8	3.3	0.001
Prior CABG (%)	3.7	1.4	<0.001
Prior lytic (%)	4.8	10.6	<0.001
ACS (%)	55.5	73.8	<0.001
Indication for angiography (%)			<0.001
Stable angina	37.7	20.7
MI	38.9	60.0
Unstable angina	18.6	15.1
Other*	4.9	4.1
Priority to angiography (%)			<0.001
Emergency	10.5	16.1
Urgent in Hospital	47.2	59.0
Urgent out of hospital	14.5	9.2
Planned	27.1	14.4
Unknown	0.8	1.3
Ejection fraction (%)			<0.001
>50%	62.3	57.5
35-50%	17.6	22.1
20-34%	3.6	4.6
<20%	0.8	1.2
Not done	8.7	7.8
Coronary Anatomy (%)			<0.001
Normal	0	0
<50% disease	0.2	0.1
Low risk (1–2 VD)	53.2	61.3
High Risk (2–3 VD)	36.7	30.9
Left Main disease	9.8	7.6
First treatment after angiography (%)			<0.001
Medical	21.4	17.6
CABG	22.8	18.4
PCI	55.8	64.0

SD: Standard deviation, BMI: body mass index, CVD: Cerebrovascular disease, PVD: Peripheral vascular disease, MI: myocardial infarction, PCI: Percutaneous Coronary Intervention, CABG: Coronary Artery Bypass Grafting, ACS: Acute coronary syndrome, VD: vessel disease. *Other include silence ischemia, evaluation of serious arrhythmia, preoperative assessment, research protocol angiography.

ISSN: 1471-2261