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Smoking Cessation InterventionNCT02188433

Promoting Smoking Cessation in the Community Via QTW 2014

A study testing Quit immediately (QI) / cut down to quit (CDTQ) in people with Smoking Cessation Intervention, run by The University of Hong Kong at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Although smoking prevalence is decreasing in Hong Kong, there are still 645,000 daily smokers 10.7% ( Thematic Household Survey 2012) and half will be killed by smoking (Lam ,2012) which accounts for over 7,000 deaths per year (Lam, Ho, Hedley, Mak, \& Peto, 2001). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Smoking Cessation Intervention
What is being tested?
Quit immediately (QI) / cut down to quit (CDTQ)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
1,307 participants
Where
1 siteChina
Study dates
May 2014to Oct 2016
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Hong Kong residents aged 18 or above
  • Smoke at least 1 cigarette per day in the past 3 months
  • Able to communicate in Cantonese
  • Exhaled carbon monoxide (CO) of 4 ppm or above, assessed by a validated CO smokerlyzer
  • Have Intention to quit

Who cannot join

  • Smokers who have difficulties (either physical or cognitive condition) to communicate
  • Currently following other smoking cessation programs

Trial locations and contacts

1 site in 1 country.

China1 site
  • The Hong Kong Council on Smoking and Health (COSH)

    Hong Kong

Other trials in China

About this study

Official title: Building Capacity and Promoting Smoking Cessation in the Community Via Quit to Win Contest 2014: a Randomized Controlled Trial

Although smoking prevalence is decreasing in Hong Kong, there are still 645,000 daily smokers 10.7% ( Thematic Household Survey 2012) and half will be killed by smoking (Lam ,2012) which accounts for over 7,000 deaths per year (Lam, Ho, Hedley, Mak, \& Peto, 2001). Smoking also accounts for a large amount of medical cost, long-term care and productivity loss of US$688 million (0.6% Hong Kong GDP) (McGhee et al., 2006) (Census \& Statistics Department (Hong Kong Special Administrative Region government), 2001). Smoking is a highly addictive behavior and it is difficult for smokers with strong nicotine dependence to quit without assistance. On the other hand, reaching and helping the many smokers who have no intention to quit is a challenge, because they are unlikely to seek professional help from smoking cessation services. The Quit and Win programme provides an opportunity to reach and encourage a large group of smokers to make quit attempt and maintain abstinence. The Quit and Win model posits that smokers participating in the contest will have higher motivation to quit with incentives and better social support (Cahill \& Petera, 2011). Studies have found that such quitting contests or incentive programs appeared to reach a large number of smokers and demonstrated a significantly higher quit rate for the quit and win group than for the control group (Cahill \& Rafael, 2008).

The Quit to Win Contest in 2014 and the study's interventions using cut down to quit approach are theoretically based on the Health Action Process Approach ( HAPA) for the intervention group (Schwarzer, 2008). The HAPA suggests that one's intention of behavior change can be fostered by knowing that the new behavior has positive outcomes as opposed to the negative outcomes that accompany the current behavior; and planning (action planning and coping planning) which serves as an operative mediator between intentions and behavior. Using gradual cut down approach on smoking cessation will probably increase smoker's self-efficacy on smoking cessation as the process could be achieved at the smoker's own perceived pace without placing too much pressure on themselves but with greater control of self in the cessation process. This was supported by the evidence that smoking reduction approach led to a greater self-efficacy to resist smoking and increased subsequent quitting (Broms, Korhonen, \& Kaprio, 2008). Most importantly, reducing cigarette consumption will lower the nicotine dependence which is associated with later abstinence (Hughes et al., 2004). On the other hand, quitting immediately will have a less sense of control and may be subjected to relapse thus lower the self-efficacy on quitting.

Therefore, the present study will examine (1) effectiveness of the cut down to quit (CDTQ) and quit immediately (QI) approaches; (2) explore the use of Community-Based Participatory Research (CBPR) model to build capacity and to engage community partners in taking on this important public health issue for sustainability in the community. In addition, process evaluation will be conducted to assess the effectiveness of the recruitment activity and how it is linked with the overall program outcomes.

Being tested
Quit immediately (QI) / cut down to quit (CDTQ)
Keywords
Effectiveness of quit immediately (QI) and cut down to quit (CDTQ) interventions in achieving smoking abstinence

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Quit immediately (QI) / cut down to quit (CDTQ)Behavioural

    Use quit immediately (QI) or cut down to quit (CDTQ) interventions to achieve smoking abstinence

Study groups in NCT02188433
Study groupRoleWhat they receive
Cut down to quit (CDTQ)ExperimentalFor those subjects who claim that they cannot quit smoking ≤7 days, they will receive a leaflet (i.e. include a roadmap of smoking reduction strategy) plus a brief intervention using the AWARD model: (a) Ask about smoking history, (b) Warn about the high risk, (c) Advise to quit as quitting can greatly reduce risks, and participants will be advised to cut down cigarette consumption at their own pace, but the process should not exceed 3 months. (d) Refer smokers to a smoking cessation clinic, and (e) Do it again: repeat the intervention and encourage smokers who fail to quit or relapse to reduce again during each telephone follow-up. For the subjects have intention to quit smoking ≤7 days, the investigator will follow-up them after a week. For those who report quitted, they will be followed up as other participants. However, if they report failed to quit, they will receive the same interventions and will be followed-up as other participants in the experimental group.
Receives: Behavioral: Quit immediately (QI) / cut down to quit (CDTQ)
Quit Immediately (QI)Active comparatorQI group subjects will receive a smoking cessation booklet (provided by COSH) plus brief intervention using AWARD model similar to CDTQ group. For the subsequent telephone follow-up repeat the health warning that 'one in two smokers will be killed by smoking' and encourage smokers who fail to quit or relapse to try again.
Receives: Behavioral: Quit immediately (QI) / cut down to quit (CDTQ)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. smoking quit rate

    The primary outcomes are self-reported 7-day point prevalence (pp) quit rate at 3 and 6 months among the two groups

    Measured: 3-, 6- and 12-month follow-up

Secondary outcomes (4)
  1. Biochemical validated quit rate

    biochemically validated quit rates at 3 and 6 months in the two groups

    Measured: 3-, 6- and 12-month follow-up

  2. Smoking reduction rate

    rate of smoking reduction by at least half of baseline amount in the two groups

    Measured: 3-, 6- and 12-month follow-up

  3. Smoking quit attempt

    number of quit attempts at 3 and 6 months among the two groups

    Measured: 3-, 6- and 12-month follow-up

  4. quit rate and reduction rate for all subjects

    the above cessation and reduction outcomes of all subjects participating in Quit to Win contest 2014

    Measured: 3-, 6- and 12-month follow-up

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jul 2014 (estimated)
  2. Study startMay 2014
  3. Primary completionJul 2016
  4. Study completionOct 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Health services research
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Participant
Enrolment
1,307 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02188433
Sponsor's protocol ID
QTW2014
Status last verified
Nov 2016
First submitted
10 Jul 2014
Last updated
18 Nov 2016
Results posted
No
Data monitoring committee
Yes

Publications

  • Zeng Y, Wu YS, Luk TT, Zhao SZ, Guo Z, Li Y, Tong HSC, Lai VWY, Cheung YTD, Lam TH, Wang MP. Quitting trajectories of Hong Kong Chinese smokers receiving behavioral smoking cessation interventions: A post hoc analysis of eight randomized controlled trials. Addiction. 2026 Jun;121(6):1568-1579. doi: 10.1111/add.70328. Epub 2026 Jan 17.

    PubMed 41546550

Questions about this trial

What is this clinical trial studying?

A study testing Quit immediately (QI) / cut down to quit (CDTQ) in people with Smoking Cessation Intervention, run by The University of Hong Kong at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 18 Nov 2016. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

smoking quit rate (time frame: 3-, 6- and 12-month follow-up). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02188433, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Nov 2016.

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