Table 2.

Multiple logistic regression analyses

Covariablesa	Main analysis (n = 1943)			Censored participants (n = 2900)			Excluding participants with out-patient cessation (n = 1834)
	Adjusted OR (95% CI)	P	P for trend	Adjusted OR (95% CI)	P	P for trend	Adjusted OR (95% CI)	P	P for trend
Age ≥ 65 years	1.78 (1.40–2.28)	< 0.001		1.29 (0.98–1.69)	0.073		1.72 (1.34–2.20)	< 0.001
Male	1.04 (0.73–1.49)	0.839		1.10 (0.79–1.51)	0.579		1.02 (0.71–1.46)	0.920
≥ 2 comorbiditiesb	1.25 (1.01–1.53)	0.037		1.17 (0.97–1.41)	0.099		1.27 (1.03–1.58)	0.026
Daily cigarette smoking > 20	1.09 (0.86–1.38)	0.487		0.75 (0.62–0.90)	0.003		1.09 (0.85–1.39)	0.492
FTND
< 4	Reference			Reference			Reference
4 to 6	0.49 (0.34–0.69)	< 0.001		0.69 (0.47–1.01)	0.056		0.45 (0.32–0.64)	< 0.001
≥ 7	0.28 (0.19–0.42)	< 0.001		0.50 (0.30–0.84)	0.009		0.27 (0.18–0.41)	< 0.001
Self-motivated	1.19 (0.95–1.50)	0.139		0.67 (0.49–0.91)	0.012		1.20 (0.96–1.54)	0.098
Discharge diagnosis
Others	Reference			Reference			Reference
Cancer	2.18 (1.66–2.86)	< 0.001		1.67 (1.32–2.13)	< 0.001		2.19 (1.67–2.87)	< 0.001
CAD/HF	1.40 (1.04–1.88)	0.028		1.24 (0.95–1.62)	0.110		1.35 (0.99–1.85)	0.058
COPD/pneumonia	1.58 (0.96–2.61)	0.073		1.32 (0.82–2.12)	0.252		1.45 (0.83–2.56)	0.195
ICU admission	2.82 (2.14–3.73)	< 0.001		2.41 (1.89–3.06)	< 0.001		2.84 (2.13–3.78)	< 0.001
Hospitalization > 4 days	1.43 (1.15–1.77)	0.001		1.19 (0.98–1.45)	0.076		1.46 (1.17–1.82)	0.001
Cessation medications
No use	Reference			Reference			Reference
NRT	1.12 (0.74–1.68)	0.599		1.05 (0.73–1.52)	0.784		1.10 (0.70–1.73)	0.684
Non-NRT	1.60 (0.89–2.86)	0.115		1.42 (0.85–2.38)	0.180		1.83 (0.93–3.59)	0.081
NRT and non-NRT	0.80 (0.42–1.51)	0.484		0.81 (0.46–1.45)	0.485		0.97 (0.48–1.97)	0.927
Number of in-hospital counseling			< 0.001			0.010			0.012
1	Reference			Reference			Reference
2	1.44 (1.05–1.98)	0.025		1.21 (0.92–1.61)	0.180		1.43 (1.03–1.98)	0.034
≥ 3	2.02 (1.27–3.22)	0.003		1.82 (1.21–2.73)	0.004		1.62 (0.98–2.66)	0.059

CAD coronary artery disease, CI confidence interval, COPD chronic obstructive pulmonary disease, FTND Fagerstrom test for nicotine dependence, HF heart failure, ICU intensive care unit, NRT nicotine replacement therapy, OR odds ratio

^aReferences for covariables: age (≥ 65 versus < 65), sex (male versus female), number of comorbidities (≥ 2 versus < 2), number of cigarettes smoked daily (> 20 versus ≤ 20), FTND score (≥ 7 and 4–6 versus < 4), motivation (self-motivated versus not self-motivated), main discharge diagnosis (cancer, CAD/HF, COPD/pneumonia versus without), ICU admission (yes versus no), length of hospital stay (> 4 days versus ≤ 4 days), and cessation medications (NRT, non-NRT, and both versus no)

^bComorbidities include cardiovascular disease, cancer, cerebral vascular disease, diabetes mellitus, hypertension, liver disease, respiratory system disease, and renal disease