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. 2010 Aug;100(8):1442–1448. doi: 10.2105/AJPH.2009.172783

TABLE 2.

Demographic Characteristics at Baseline, by Quit Status at 3, 6, and 12 Months Among the Intervention Group (N = 249): Project STOP, Southeastern United States, 2005–2007

3-Month Status
6-Month Status
12-Month Status
Demographic Characteristics Smoker (n = 207), Mean (SD) or No. (%) Quit (n = 42), Mean (SD) or No. (%) Smoker (n = 214), Mean (SD) or No. (%) Quit (n = 35), Mean (SD) or No. (%) Smoker (n = 220), Mean (SD) or No. (%) Quit (n = 29), Mean (SD) or No. (%)
Age, y 33.6 (9.0) 34.6 (9.2) 33.9 (9.0) 33.1 (9.2) 33.8 (9.0) 34.0 (9.6)
Weight, lbs 170.4 (42.1) 167.5 (37.0) 171.0 (42.5) 163.1 (31.4) 170.6 (42.1) 164.5 (33.4)
Body mass index, kg/m2 28.2 (6.6) 28.5 (6.2) 28.3 (6.7) 28.0 (5.7) 28.3 (6.6) 28.3 (6.1)
No. children 2.3 (1.6) 1.8 (1.6) 2.3 (1.6) 1.6 (1.6) 2.3 (1.6) 1.5 (1.4)
Age, y, at first cigarette 13.7 (4.6) 13.7 (5.8) 13.5 (4.4) 14.8 (6.9) 13.7 (4.9) 13.3 (4.1)
Age, y, became daily smoker 16.1 (4.3) 16.8 (5.6) 15.9 (4.6) 17.9 (6.5) 16.1 (5.0) 16.6 (4.4)
No. cigarettes/d 16.4 (8.6) 16.8 (5.6) 16.6 (8.8) 15.2 (8.3) 16.5 (8.8) 15.9 (8.3)
No. cigarettes yesterday 14.5 (8.6) 14.6 (8.8) 14.7 (8.7) 12.9 (7.9) 14.6 (8.7) 13.8 (7.9)
CO concentration, ppm 14.8 (8.5) 12.2 (7.7) 14.5 (8.5) 13.6 (8.0) 14.4 (8.5) 13.8 (8.1)
Duration of smoking, y 20.0 (9.5) 21.0 (11.6) 20.4 (9.6) 18.7 (11.5) 20.1 (9.8) 20.8 (10.1)
No. quit attempts 2.3 (2.6) 2.8 (3.6) 2.4 (2.8) 2.4 (2.8) 2.4 (2.8) 2.4 (3.0)
Duration last quit attempt, mo 29.6 (55.7) 27.9 (41.4) 29.4 (54.1) 28.6 (46.1) 28.8 (53.5) 34.9 (54.7)
Race
    Black 99 (48%) 20 (48%) 102 (47%) 17 (49%) 103 (47%) 16 (55%)
    White 90 (43%) 20 (48%) 94 (44%) 16 (46%) 97 (44%) 13 (45%)
    Other 19 (9%) 2 (5%) 19 (9%) 2 (6%) 21 (10%) 0 (0%)
Education
    < High school 58 (29%) 9 (22%) 60 (29%) 7 (21%) 63 (30%) 4 (14%)
    High school graduate 85 (43%) 15 (37%) 85 (41%) 15 (44%) 85 (40%) 15 (54%)
    > High school 56 (28%) 17 (42%) 61 (30%) 12 (35%) 64 (30%) 9 (32%)
Marital status
    Single 94 (47%) 21 (51%) 95 (45%) 21 (62%) 97 (46%) 18 (64%)
    Married 31 (16%) 6 (15%) 32 (15%) 5 (15%) 34 (16%) 3 (11%)
    Divorced 63 (32%) 11 (27%) 67 (32%) 7 (21%) 68 (32%) 6 (24%)
    Widow 12 (6%) 3 (7%) 14 (7%) 1 (3%) 14 (7%) 1 (4%)

Notes: CO = carbon monoxide; ppm = parts per million; STOP = Smoking Treatment of Prisoners.