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Table 4 Univariable logistic regression analyses for point prevalence and 6-month continuous abstinence, including non-responders at follow-up treated as smokers

From: Self-perceived ability to cope with stress and depressive mood without smoking predicts successful smoking cessation 12 months later in a quitline setting: a secondary analysis of a randomized trial

Point prevalence abstinence
Variable n/Na OR (95% CI for OR) p
Gender; men vs. women (ref) 138/612 vs. 474/612 0.62 (0.39–0.98) 0.041
Age, years    0.203
 - ≤ 34 (ref) 122/602 1.0  
 - 35-49 150/602 1.49 (0.86–2.56) 0.156
 - 50-64 231/602 1.43 (0.86–2.37) 0.167
 - ≥ 65 99/602 0.90 (0.48–1.71) 0.757
Number of smoked cigarettes/day (data journal) md = 10, q1 = 0, q3 = 20, N = 505 0.94 (0.91–0.96) < 0.001
Variables from baseline questionnaire
Number of years of education md = 12, q1 = 10, q3 = 13, N = 594 1.05 (0.99–1.12) 0.116
Number of years smoked before baseline md = 32, q1 = 17, q3 = 40, N = 575 1.00 (0.99–1.01) 0.957
Smoking the week before baseline; no vs. yes (ref) 171/609 vs. 438/609 4.19 (2.85–6.15) < 0.001
Passive smoking at baseline; not exposed vs. exposed (ref) 426/573 vs. 147/573 1.64 (1.04–2.57) 0.032
Drug use (NRT, Zyban®, Champix®) the week before baseline; yes vs. no (ref) 308/592 vs. 284/592 1.72 (1.19–2.49) 0.004
Snus use the week before baseline; yes vs. no (ref) 38/552 vs. 514/552 0.39 (0.15–1.02) 0.054
Other support at baseline: yesb vs. no (ref) 428/600 vs. 172/600 1.73 (1.13–2.66) 0.012
Likelihood of being smoke-free in 1 year (baseline, 1–10) md = 8, q1 = 7, q3 = 10, N = 590 1.23 (1.11–1.36) < 0.001
Handle stress and depression successfully without smoking (baseline, 1–10) md = 7, q1 = 4, q3 = 9, N = 590 1.22 (1.13–1.31) < 0.001
Will use pharmaceuticals if necessary (baseline,1–10) md = 9, q1 = 5, q3 = 10, N = 592 0.99 (0.93–1.04) 0.624
6-month continuous abstinence
Variable n/Na OR (95% CI for OR) p
Gender; men vs. women (ref) 138/612 vs. 474/612 0.67 (0.41–1.12) 0.127
Age, years    0.144
 - ≤ 34 (ref) 122/602 1.0  
 - 35-49 150/602 1.73 (0.95–3.17) 0.075
 - 50-64 231/602 1.45 (0.82–2.56) 0.207
 - ≥ 65 99/602 0.91 (0.44–1.89) 0.801
Number of smoked cigarettes/day (data journal) md = 10, q1 = 0, q3 = 20, N = 505 0.93 (0.91–0.96) < 0.001
Variables from baseline questionnaire
Number of years of education md = 12, q1 = 10, q3 = 13, N = 594 1.05 (0.98–1.12) 0.188
Number of years smoked before baseline md = 32, q1 = 17, q3 = 40, N = 575 1.01 (0.99–1.02) 0.423
Smoking the week before baseline; no vs. yes (ref) 171/609 vs. 438/609 5.41 (3.56–8.21) < 0.001
Passive smoking at baseline; not exposed vs. exposed (ref) 426/573 vs. 147/573 2.14 (1.25–3.68) 0.006
Drug use (NRT, Zyban®, Champix®) the week before baseline; yes vs. no (ref) 308/592 vs. 284/592 1.54 (1.03–2.31) 0.035
Snus use the week before baseline; yes vs. no (ref) 38/552 vs. 514/552 0.20 (0.05–0.84) 0.028
Other support at baseline: yesb vs. no (ref) 428/600 vs. 172/600 1.57 (0.99–2.52) 0.058
Likelihood of being smoke-free in 1 year (baseline, 1–10) md = 8, q1 = 7, q3 = 10, N = 590 1.35 (1.19–1.53) < 0.001
Handle stress and depression successfully without smoking (baseline, 1–10) md = 7, q1 = 4, q3 = 9, N = 590 1.29 (1.19–1.41) < 0.001
Will use pharmaceuticals if necessary (baseline,1–10) md = 9, q1 = 5, q3 = 10, N = 592 0.97 (0.91–1.03) 0.365
  1. a n = number in category, N = total number in analysis
  2. b Social and/or professional support