Table 3 Multivariate logistic regression analysis for hardcore smokers and hardcore smoking measures according to socioeconomic status (all odds ratios are adjusted for other variables in the models)

1

1

1

1

1.06 (0.81–1.39)

0.88 (0.68–1.12)

1.15 (0.90–1.46)

1.22 (0.99–1.52)

1.06 (0.81–1.39)

0.90 (0.70–1.15)

1.13 (0.88–1.44)

1.15 (0.93–1.41)

1.15 (0.87–1.51)

0.84 (0.66–1.07)

1.29 (1.00–1.67)

1.07 (0.86–1.33)

1.06 (0.79–1.41)

0.92 (0.71–1.18)

1.22 (0.93–1.59)

0.93 (0.74–1.15)

1.14 (0.86–1.52)

0.74 (0.57–0.97)

1.27 (0.98–1.64)

1.08 (0.85–1.37)

0.91 (0.69–1.20)

0.82 (0.63–1.05)

1.14 (0.88–1.48)

1.01 (0.81–1.27)

1

1

1

1

1.27 (1.01–1.60)

1.59 (1.31–1.94)

1.00 (0.83–1.20)

1.27 (1.05–1.54)

1.64 (1.28–2.11)

2.31 (1.86–2.87)

1.23 (1.00–1.50)

1.51 (1.24–1.85)

1.51 (1.15–1.98)

2.47 (1.95–3.14)

1.11 (0.89–1.38)

1.43 (1.14–1.79)

1.10 (0.82–1.48)

0.96 (0.75–1.23)

1.13 (0.90–1.44)

1.33 (1.04–1.71)

1

1

1

1

0.98 (0.83–1.15)

0.89 (0.77–1.02)

0.98 (0.85–1.13)

0.95 (0.82–1.10)

0.88 (0.73–1.05)

0.90 (0.77–1.05)

0.97 (0.83–1.13)

1.00 (0.86–1.17)

0.88 (0.71–1.09)

0.70 (0.58–0.85)

0.98 (0.82–1.17)

0.94 (0.77–1.13)

1

1

1

1

3.90 (3.07–4.97)

7.26 (6.00–8.79)

1.14 (0.98–1.33)

1.22 (1.05–1.42)

1

1

1

1

1.15 (0.91–1.45)

1.64 (1.30–2.08)

0.85 (0.70–1.04)

0.94 (0.75–1.19)

1.03 (0.83–1.26)

1.35 (1.09–1.65)

0.87 (0.73–1.03)

0.74 (0.60–0.91)

0.83 (0.65–1.05)

0.96 (0.77–1.20)

0.79 (0.65–0.97)

0.67 (0.53–0.84)

1

1

1

1

1.09 (0.85–1.39)

1.09 (0.89–1.32)

1.21 (1.00–1.47)

1.14 (0.92–1.40)

0.79 (0.66–0.96)

0.62 (0.53–0.73)

0.98 (0.84–1.15)

0.94 (0.81–1.10)

1

1

1

1

0.80 (0.68–0.93)

0.65 (0.58–0.74)

1.11 (0.98–1.27)

1.12 (0.97–1.29)

0.76 (0.61–0.95)

0.57 (0.48–0.68)

1.01 (0.84–1.22)

0.95 (0.80–1.14)