Author of

• 10997

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  P1.23 - Poster Session 1 - Tobacco Control, Prevention and Chemoprevention (ID 162)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Prevention & Epidemiology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 10999

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    P1.23-002 - A randomized controlled trial of brief counselling intervention and audio materials for smoking cessation in a low-dose CT screening study (ID 2959)

    09:30 - 09:30  |  Author(s): E.M. McCaul
    • Abstract

    Background
    Smoking cessation is a highly cost-effective health intervention. Embedding a smoking cessation program within a lung cancer screening program may significantly enhance the cost-effectiveness of screening. Smokers enrolling in Low-dose CT screening studies are motivated to quit but the best strategy to aid smoking cessation is not yet defined.

    Methods
    Population: smokers enrolled in a LDCT screening study, age 60-74years, with >=30 pack-year smoking history. Smokers could enrol at any time during the LDCT study. Intervention: single face-to-face counselling session on the day of attendance for LDCT screening plus audio cessation advice (on mp3 player) plus written quit materials. The individualised counselling session was given by a thoracic physician using motivational interview techniques. Control: written quit materials only. Outcome: point prevalence self-reported smoking cessation at 1 year, confirmed with exhaled CO measurement (ECO) where available; ≥10ppm level indicating non-abstinence.

    Results
    Fifty-four participants were randomized (control group n=26, intervention group n=28). There were no statistically significant differences between groups in age, sex, pack-years smoking, baseline CT scan findings, nicotine dependence score, self-belief in ability to quit (on a scale of 1-5, higher score indicating stronger belief) or education level although the intervention group reported a higher number of cigarettes smoked per day (table 1). Baseline LDCT scans were reported as positive if one or more non-calcified nodules >=4mm diameter were detected. The mean duration of interview was 26 minutes. Overall, ten participants (18.6%) reported smoking cessation (five had ECO confirmation and five did not have ECO testing); two patients (3.7%, one from each group) had missing data and were assumed to be continuing smokers; the remainder reported continued smoking. There was no difference in self-reported cessation between the intervention and control groups (17.8% vs 19.2% respectively).

    Table 1

    		Control	Intervention	p value
    	Women	10	10	ns
    	Men	16	18	ns
    Education	Up to High School	13	13	ns
    	Teriary	13	15	ns
    	Age, years, mean	64	64	ns
    	Age started smoking, years	16	17	ns
    	Cigarette consumption per day, n	23	30	0.03
    	Pack years smoking, mean	61	64	ns
    	FEV1 % predicted, mean	92	90	ns
    	Fagerstrom nicotine dependence score, mean	4.9	5.2	ns
    Baseline CT Scan report	Negative	12	10	ns
    	Positive	14	18	ns
    	Self-belief in ability to quit	3.7	3.4	ns

    Conclusion
    The 18% quit rate in this study is higher than reported background rates however the brief intervention provided did not increase quit rates above that of the control group. Smokers in this study reported moderate to high levels of nicotine dependence with extensive smoking histories, and, although motivated to quit, may require more intensive assistance to support smoking cessation.