ChiCTR1900021400.
| Study name | Individual tobacco cessation research based on nicotine metabolite ratio in smoking patients with chronic obstructive pulmonary disease: a randomized controlled trial |
| Methods | Parallel‐group RCT |
| Participants | 224 participants aged 18‐85 years who meet the diagnostic criteria for both COPD and tobacco dependency, who have been smoking for > 5 years, with at least 10 CPD for the past 12 months. Exhaled CO > 10 ppm |
| Interventions |
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| Outcomes | Smoking abstinence rate. Nicotine metabolite ratio |
| Starting date | 18 February 2019 |
| Contact information | Xiao Dan, +86138111374263, danxiao@263.net |
| Notes | Study funding: The China‐Japan Friendship Hospital |