Condition category
Mental and Behavioural Disorders
Date applied
06/07/2012
Date assigned
31/07/2012
Last edited
20/06/2014
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
This study aims to promote smoking cessation in the community and assess the effectiveness of two additional interventions compared to self-help material for participants of the Quit and Win Contest. The specific objectives are to examine the reach and effect of the Quit and Win Contest in attracting smokers to quit smoking in the community; to evaluate the effectiveness of two smoking cessation approaches (i.e. providing brief advice by telephone or sending standard SMS messages compared to providing self-help cessation materials) on achieving successful quitting among smokers who join the Quit and Win Contest organized by the Hong Kong Council on Smoking and Health.

Who can participate?
Hong Kong residents aged 18 or over who have smoked at least one cigarette per day in the past 6 months, are able to communicate in Cantonese and read Chinese, and have a mobile phone to receive messages.

What does the study involve?
Participants were randomly allocated to receive either telephone counselling, mobile phone messages or self-help smoking cessation materials. All participants were followed up at 2, 6 and 12 months. Participants who reported to have stopped smoking at 6 and 12 months were invited for smoking status assessment by a biochemical test. Participants who passed the test were offered the opportunity to enter into a lucky draw organized by COSH.

What are the possible benefits and risks of participating?
Since the interventions to participants involved a brief telephone counseling from a nurse or receiving mobile phone messages, there will be no immediate direct benefit to those taking part. There was also no potential risks to the participants.

Where is the study run from?
Daily smokers were recruited in the shopping malls of 16 districts in Hong Kong. The study was run by the Hong Kong Council on Smoking and Health.

When is study starting and how long is it expected to run for?
The study ran from May to July 2009.

Who is funding the study?
The study was funded by the Hong Kong Council of Smoking and Health.

Who is the main contact?
Professor Sophia Siu Chee Chan (nssophia@hku.hk)
Professor David Wong (cnwong@hku.hk)

Trial website

Contact information

Type

Scientific

Primary contact

Prof Sophia Siu Chee Chan

ORCID ID

Contact details

4/F
William M.W. Mong Block
21 Sassoon Road
Pokfulam
-
-
Hong Kong

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

N/A

Study information

Scientific title

Promoting smoking cessation through the Quit and Win contest: a randomized controlled trial comparing telephone brief advice, SMS message, and self-help approaches to smoking cessation

Acronym

Study hypothesis

The study is a three-armed randomized controlled trial to evaluate the effectiveness of brief advice by telephone (TEL group), a standard SMS message (SMS group) compared to self-help materials (CONTROL group) to smokers who join the Quit and Win Contest organized by The Hong Kong Council on Smoking and Health (COSH). The aims are to promote smoking cessation in the community, and to assess the effect of minimal intervention on smoking cessation through the Quit and Win Contest. We hypothesize that the proactive telephone brief advice and SMS message interventions will lead to significant increases in rates of smoking cessation in the intervention groups compared with the control group.

The specific objectives of the study are:
1. To test the effectiveness of different smoking cessation approaches on quit rate among smokers who join the Quit and Win Contest
2. To evaluate the effectiveness of the Quit and Win Contest to attract smokers to quit smoking.

Ethics approval

Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster, ref: UW 09-236

Study design

Three-armed randomized controlled trial

Primary study design

Interventional

Secondary study design

Randomised controlled trial

Trial setting

Other

Trial type

Quality of life

Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet

Condition

Promoting smoking cessation

Intervention

TEL intervention group:
Study participants who are randomized to the TEL group will receive a proactive call from our trained smoking cessation counselor within 2 days after their consent to the RCT. They will receive advice on quitting smoking and specific warning on the hazardous effects of smoking on health will be highlighted. A hotline number will be given to the participants if they need further help. The brief telephone advice will last less than 5 minutes.

SMS intervention group:
Study participants who are randomized to the SMS group will receive SMS text messages on smoking cessation advice and warning on the hazardous effects of smoking on health. The participants will receive at least one SMS text and one more SMS text message will be sent if we obtain sponsorship from mobile phone companies.

Control group:
Study participants who are randomized to the CONTROL group will not receive any quitting assistance other than the self-help materials from COSH at the recruitment sites.

Participants who agree to join the Quit and Win Contest but refuse to be randomized and still agree to be followed-up will also be considered as the control group. They will be provided with self-help materials and be followed up at 2, 6 and 12 months. Those who reported to have stopped smoking will also be invited for biochemical validation of smoking status.

All participants of the Quit and Win Contest will receive self-help materials on smoking cessation.

Intervention type

Other

Phase

Not Applicable

Drug names

Primary outcome measures

RCT of smoking cessation interventions:
Self-reported 7-day point prevalence (pp) quit rate measured at 6 months.

Process evaluation of Quit and Win Contest:
1. Number of people who visited the exhibition
2. Number of leaflets distributed
3. Number of people who visited the smoking cessation booth
4. Number of smoking cessation self-help materials distributed
5. Number of people interested in joining the Quit and Win Contest
6. Number of eligible participants
7. Number of eligible participants enrolled into the contest
8. Number of eligible participants consenting to the RCT study

Secondary outcome measures

1. Biochemically validated quit rate at 6 months
2. Self-reported 7-day pp quit rates at 2 and 12 months
3. Rate of smoking reduction by at least of half
4. Number of quit attempts at 2, 6 and 12 months

Overall trial start date

30/05/2009

Overall trial end date

15/07/2009

Reason abandoned

Eligibility

Participant inclusion criteria

1. Hong Kong residents aged 18 or above
2. Smoke at least one cigarette per day in the past 6 months
3. Able to communicate in Cantonese and read Chinese
4. Have a mobile phone to receive SMS

Participant type

Patient

Age group

Adult

Gender

Both

Target number of participants

1290

Participant exclusion criteria

1. Smokers who are psychologically or physically unable to communicate
2. Currently following other forms of smoking cessation programme

Recruitment start date

30/05/2009

Recruitment end date

15/07/2009

Locations

Countries of recruitment

Hong Kong

Trial participating centre

4/F, William M.W. Mong Block
-
-
Hong Kong

Sponsor information

Organisation

Hong Kong Council on Smoking and Health (Hong Kong)

Sponsor details

Unit 4402-03
44/F
Hopewell Centre
183 Queen’s Road East
Wanchai
-
-
Hong Kong

Sponsor type

Government

Website

http://www.smokefree.hk/tc/content/home.do

Funders

Funder type

Government

Funder name

Hong Kong Council on Smoking and Health (Hong Kong)

Alternative name(s)

Funding Body Type

Funding Body Subtype

Location

Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes