TABLE 2.

Results of the univariate and multivariate logistic regression analyses for diagnosing lung cancer

Variable	Univariate analysis	Multivariate analysis	β#
Sex	2.01 (1.26–3.20)	1.42 (0.76–2.58)	0.34
Age	1.08 (1.05–1.11)	1.05 (1.02–1.09)	0.05
BMI	0.99 (0.94–1.04)	−
Smoking status		−
Current smoker	17.49 (6.79–45.06)
Ex-smoker	7.56 (3.23–17.69)
Never smoked	Ref.
Smoking exposure pack-years
0	Ref.	Ref.
1–20	3.88 (1.56–9.65)	3.48 (1.25–9.66)	1.25
21–40	14.77 (5.89–37.04)	10.20 (3.66–28.46)	2.32
>40	19.36 (7.36–50.91)	11.69 (4.04–33.87)	2.46
COPD	4.90 (2.80–8.58)	2.29 (1.18–4.43)	0.83
Diabetes mellitus	0.70 (0.30–1.64)	−
Aeonose classification value [13]	24.20 (9.71–60.33)	12.67 (4.48–35.83)	2.54

Data are presented as odds ratio (95% confidence interval) unless otherwise stated. β: regression coefficient. BMI: body mass index; −: not added to the multivariate model. ^#: constant −5.54.