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Fig. 3 | Respiratory Research

Fig. 3

From: Impact of smoking reduction on lung cancer risk in patients with COPD who smoked fewer than 30 pack-years: a nationwide population-based cohort study

Fig. 3

Multivariable-adjusted hazard ratios (95% CI) for incidence of lung cancer according to amount of smoking change. The curves represent the adjusted odds ratios (solid lines) and their 95% confidence intervals (dashed lines) for the incidence of lung cancer based on restricted cubic splines for the amount of smoking change with knots at the 5th, 35th, 65th, and 95th percentiles of their sample distributions. The reference value (diamond dots) was set to zero, which did not change. Quitter group was categorized in -100%

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Respiratory Research

ISSN: 1465-993X

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