“…In previous studies, factors related to the intention to quit smoking were age, sex, education level, marital status, living condition, area of residence, household income, smoking amount, second-hand smoking, number of attempts to quit, and number of chronic diseases [ 12 , 13 ]. In this study, we analyzed the factors associated with the intention of smoking cessation by including new variables to the variables already explored, particularly the history of smoking-related diseases.…”