Table 2. The demographic properties of the surgeons and their knowledge about the efficacy of smoking cessation interventions and the benefit of preoperative smoking cessation.

NRT:nicotine replacement therapy. NS: nonspecific. CS: Current smoker, EX-S:Ex-smoker, NnS:Nonsmoker. aThe answers were given more than once. bPearson’s chi-square test. p<0.05, c,Mann-Whitney U p<0.05 or p<0.01.dthe answers of the participants or eonly current smokers or f only nonsmokers to the question; the methods used to increase a patient’s chance of quitting, Mann-Whitney U p<0.05.