Abstract
Background/Objective: Smoking is an individual risk factor for bladder cancer. Many patients are still smoking at the time of their diagnosis, yet few trials have examined smoking cessation interventions (SCIs) in relation to transurethral resection of the bladder tumor (TURBT). This study therefore aimed to compare the efficacy of a hospital-based 6-week intensive SCI with standard treatment among this patient group. Methods: A parallel-arm randomized controlled trial was conducted from December 2021 to March 2024 at two university hospital urology departments in Denmark. A total of 38 daily smokers undergoing TURBT were allocated to the hospital-based intensive SCI, including weekly meetings, patient education, motivational support, and complimentary nicotine replacement therapy or the standard treatment with very brief advice and referral to the same intensive SCI at a municipality clinic. The primary outcome was smoking cessation at the end of the intervention, assessed through participant interviews. The secondary outcomes included continuous abstinence at three and six months, quality of life, and frailty. Analyses were performed as intention-to-treat. Results: After six weeks, 37% in the hospital-based group and 6% in the standard group achieved smoking cessation (p = 0.042). At three and six months the quit rates were, 37% and 26% in the hospital-based group, compared to 0% and 0% in the standard group, respectively. No significant differences in quality of life or frailty were found. Conclusions: This trial found that hospital-based intensive SCI increased cessation rates compared to standard treatment. It would be valuable to evaluate the impact on postoperative complications, cancer prognosis, and long-term cessation in a sizeable new study.