Table 1.

Characteristics of Participants Stratified by Smoking Status and Duration of Reported Abstinence

	AUDIT-C categories
	Current smoker	Quit less than a year	Quit 1–5 years ago	Quit 6–10 years ago	Quit more than 10 years ago	p-value
N	8,067	1,301	2,321	2,119	10,163
%	33.6	5.4	9.7	8.8	42.4
Characteristics
Age
<50	31.2	25.8	19.0	13.6	6.4	<0.001
50/59	27.5	25.7	22.6	20.8	12.9
60/69	26.3	30.7	33.3	34.9	31.9
70/79	13.7	16.4	22.8	27.7	41.5
≥80	1.4	1.4	2.4	3.1	7.2
Mean(SD)	56.5(11.6)	57.9(11.9)	60.5(11.8)	62.8(11.0)	67.5(9.9)	<0.001
Male	96	96.5	96.9	96.7	98.0	<0.001
Caucasian	71.5	70.2	73.6	77.1	82.1	<0.001
Married	43.1	49.6	55.4	61.1	67.7	<0.001
Education
Less than high school	27.5	24.0	27.8	26.5	30.7	<0.001
High school graduate	61.8	62.9	58.8	60.6	53.0
College graduate	10.7	13.1	13.4	13.1	16.3
SABA— or IPRA-neb	1.65	3.15	3.4	2.74	1.72	<0.001
ICS	6.9	11.6	11.5	9.6	7.1	<0.001
Number of SABA MDI
None	79.7	75.3	77.0	80.7	86.3	<0.001
<5	7.4	8.2	7.2	6.2	4.9
5–9	4.3	5.8	5.3	4	3.1
≥10	8.7	10.8	10.5	9.2	5.7
Number of Ipra MDI
None	87.4	83.4	83.3	87.7	92.4	<0.001
<5	4.1	4.5	4.5	3.0	2.2
5–9	3.0	3.9	3.2	2.5	1.8
≥10	5.5	8.2	9.0	6.8	3.7
Prior COPD exacerbations	4.7	7.9	7.2	5.4	3.4	<0.001
Prior COPD	34.9	35.4	35.6	30.3	23.2	<0.001
SIC (mean)	5.4	3.5	3.8	3.7	3.7	<0.001
MI	16.0	18.1	21.6	21.9	20.5	<0.001
Diabetes	15.5	16.5	20.8	23.6	24.9	<0.001
Stroke	9.9	9.6	12.4	10.7	10.7	0.009
Cancer	8.7	10.3	13.2	12.6	13.8	<0.001
CHF	6.4	8.6	9.8	9.9	9.1	<0.001
Lung	28.2	28.7	29.9	25.4	19.6	<0.001
Pneumonia	13.5	14.9	14.7	14.3	14.5	0.298
AUDIT-C						<0.001
Never	36.2	39.7	49.7	47.9	48.9
1–3	27.9	36.1	29.9	33.7	32.9
4–5	13.5	11.7	10.9	11.2	11.8
6–7	9.0	6.2	4.9	3.8	3.5
8–9	6.1	3.8	2.8	1.8	1.8
10+	7.3	2.5	1.8	1.7	1.0