“…When summarizing the results, the risk of experiencing postoperative bleedings did not differ significantly between preoperative smokers and nonsmokers neither in the overall metaanalysis (RR = 1.18, 95% CI: 0.79-1.78) 14,37,38,50,100,115,116 nor in the meta-analysis in which only the adjusted RRs were included (RR = 1.34, 95% CI: 0.59-3.07) ( Table 3). When summarizing the results, the risk of experiencing postoperative bleedings did not differ significantly between preoperative smokers and nonsmokers neither in the overall metaanalysis (RR = 1.18, 95% CI: 0.79-1.78) 14,37,38,50,100,115,116 nor in the meta-analysis in which only the adjusted RRs were included (RR = 1.34, 95% CI: 0.59-3.07) ( Table 3).…”