The long-term outcomes of tobacco control strategies based on the cognitive intervention for smoking cessation in COPD patients
Authors: Wenbing Duan
Si Lei
Caiqin Peng
Meilei Li
Shangjie Wu
Ping Chen
Journal: Respiratory Medicine (2020)
Discipline: CLINICAL MEDICINE
Keywords: Chronic obstructive pulmonary disease; Cigarette smoking; Cognitive intervention; Smoking cessation; Tobacco control strategies.
Affiliations: Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Research Unit of Respiratory Disease, Central South University, Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China. Electronic address: .

Abstract:  Objective: To evaluate the long-term efficacy of tobacco control strategies based on cognitive intervention for smoking cessation in chronic obstructive pulmonary disease (COPD) patients, and to provide basis for clinical practice. Materials and methods: 102 COPD patients with a long-term history of smoking from the outpatient clinic were recruited in the study. These smokers were randomly divided into intervention group and control group. The intervention group received a cognitive intervention containing individual consultation, telephone follow-ups and self-help materials, etc. The prevalence of quitting smoking, acute exacerbation (AE), lung function and survival were compared in the groups in 10 years. Results: There were significant differences between the intervention group and the control group in the rate of persistent quitting smoking in half a year (17.6% vs 3.9%) (P &lt; 0.05), the rate of quitting smoking at the 6th month (58.8% vs 33.3%) (P &lt; 0.05). After 3 months (P &lt; 0.01) and 6 months (P &lt; 0.01), the difference in body weight between the intervention group and the control group was statistically significant. Intervention-group patients had fewer AE per year (P &lt; 0.01) and higher FEV1/FVC ratio (P &lt; 0.01) after 5-year and 10-year follow-up. Besides, the FEV1% predicted in the intervention patients was higher than that in control group after 10-year follow-up. The ages of patients in the death group were greater than those in the survival group. Death-group patients had longer smoking times, higher smoking index, and later onset of COPD symptoms. Death-group patients had lower FEV1% predicted (P &lt; 0.05) and FEV1/FVC ratio (P &lt; 0.01). During 10-year follow-up, 30 patient deaths were recorded (the control group: n = 48; 19 deaths, and intervention group: n = 46; 11 deaths), and patients in the control group had lower survival than those in the intervention group. (P &lt; 0.05). Conclusion: The method of quitting smoking based on cognitive intervention is an effective way for COPD patients to quit smoking successfully. Quitting smoking can slower deterioration in lung function and improve the survival of COPD patients. Clinical trial registration number: ChiCTR2000031239 (Chinese clinical trial registry). 

Retracted: No

PubPeer comments:
 There seems an issue with the p-values of the at least the u03c72 and maybe some other tests. Table 1, Sex (M F): p=1.000 should be p=0.558 Table 3, Sex (M F): p=1.000 should be p=0.583 Table 3, FEV1 % predicted at 5-year follow-up: p=0.560 should be p=0.157 (?) Table 4, Sex (M F): p=0.496 should be p=0.957 ,