An RCT of a Smartphone-based TID Programme

Not Applicable

Completed

• Conditions: Tobacco-related Communications; Tobacco Industry Denormalisation Beliefs
• Interventions: Other: Smartphone-based messages

• Registration Number: NCT03342768
• Lead Sponsor: The University of Hong Kong

Brief Summary

The study aims to test the effect a smartphone-based intervention on primary school students and their parents' attitudes towards tobacco industry and their tobacco-related communications.

Detailed Description

Not available

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study First Submitted: 2017-11-08
• Study First Submitted QC: 2017-11-09
• Study First Posted: 2017-11-17
• Study Start: 2018-03-22
• Primary Completion: 2018-06-29
• Study Completion: 2018-06-29
• Status Verified: 2018-09
• Last Update Submitted: 2018-09-10
• Last Update Posted: 2018-09-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 163

Inclusion Criteria

• Parents and children should all understand Chinese.
• Parents should have a smartphone and use WhatsApp (a smartphone-based app)

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Exclusion Criteria

• n/a

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Sugar sweetened beverages	Smartphone-based messages	Messages will be sent 1-2 times per week containing information on the adverse health effects of sugar sweetened beverages.
TID	Smartphone-based messages	Messages will be sent 1-2 times per week containing information that aims to denormalise the tobacco industry.

Primary Outcome Measures

Name	Time	Method
TID beliefs in parents	1 month	Parents will report their opinions towards 4 sentences: 1) Tobacco companies are a respectable industry; 2) the tobacco industry does everything it can to get young people to smoke; 2) the tobacco industry use many tactics to resist tobacco control regulations; 4) the tobacco industry deceived the public for financial interests. All the 4 questions have 5 options from definitely yes to definitely no. The options will be recoded into 0-4 or 4-0, as appropriate, with higher scores indicating more negative attitudes towards the industry. A sum of scores from the 4 questions will be deemed a measurement of TID beliefs.
TID beliefs in children	1 month	Students will report their opinions towards 4 sentences: 1) Tobacco companies are a respectable industry; 2) the tobacco industry does everything it can to get young people to smoke; 2) the tobacco industry use many tactics to resist tobacco control regulations; 4) the tobacco industry deceived the public for financial interests. All the 4 questions have 5 options from definitely yes to definitely no. The options will be recoded into 0-4 or 4-0, as appropriate, with higher scores indicating more negative attitudes towards the industry. A sum of scores from the 4 questions will be deemed a measurement of TID beliefs.

Secondary Outcome Measures

Name	Time	Method
Tobacco related communication reported by parents	1 month	Parents will report whether they said the following to children in the past 30 days: 1) harm of smoking 2) harm of secondhand smoking 3) criticise smoking behaviour 4) approve tobacco control measures. Each of the messages will be analyse as a binary outcome.
Sugar sweetened beverage (SSB) related communication reported by parents	1 month	Parents will report whether they said the following to children in the past 30 days: 1) harm of SSB 2) certain kind of drinks contain sugar 3) don't drink or drink less SSB. Each of the messages will be analyse as a binary outcome.
Tobacco related communication reported by children	1 month	Students will report whether they heard the following from parents in the past 30 days: 1) harm of smoking 2) harm of secondhand smoking 3) criticize smoking behaviour 4) approve tobacco control measures. Each of the messages will be analyse as a binary outcome.
SSB related communication reported by children	1 month	Students will report whether they heard the following from parents in the past 30 days: 1) harm of SSB 2) certain kind of drinks contain sugar 3) don't drink or drink less SSB. Each of the messages will be analyse as a binary outcome.
Intention to smoke in children	1 month	Two questions will be used to assess this outcome: 1) do you think you will smoke in the next 12 months? 2) If one of your good friends offers you a cigarette, will you smoke it? Response options are definitely not/probably not/probably yes/definitely yes. Those choosing options other than "definitely not" for either of the questions will be deemed having intention to smoke; the other students will be deemed having no intention to smoke.
Home exposure to secondhand smoke in children reported by children	1 month	One question will be asked: 1) On how many of the past 7 days did someone smoke near you at home? (Options 0 day/1/2/3/4/5/6/7). The responses will dichotomised into a binary indicator of secondhand smoke exposure (no/any) and analysed as an outcome.
Home exposure to secondhand smoke in children reported by parents	1 month	One question will be asked: 1) On how many of the past 7 days did someone smoke near your children at home? (Options 0 day/1/2/3/4/5/6/7). The responses will dichotomised into a binary indicator of secondhand smoke exposure (no/any) and analysed as an outcome.
Parents' support for tobacco control	1 month	Parents will report their opinions towards 4 sentences: 1) government should adopt plain packaging; 2) government should impose stronger regulation on tobacco; 3) government should strengthen the prevention of the harm of tobacco. The options were strongly support/support/neutral/oppose/strongly oppose. The options will be recoded into 4-0, with higher scores indicating stronger support for tobacco control. A sum of scores from the 4 questions will be deemed a measurement of parents' support for tobacco control.
Negative attitude towards smoking in parents	1 month	Parents will be asked "your attitude towards smoking is" with options of very positive/positive/neutral/negative/very negative. The options will be dichotomised as very negative vs others (negative/neutral/positive/very positive) for analysis.
Negative attitude towards smoking in children	1 month	Children will be asked "your attitude towards smoking is" with options of very positive/positive/neutral/negative/very negative. The options will be dichotomised as very negative vs others (negative/neutral/positive/very positive) for analysis.
Past 7-day consumption of SSB and water in children reported by children	1 month	Children will be asked "On how many of the past 7 days did you drink SSBs?" and "On how many of the past 7 days did you drink water?" For both questions, the options were 0/1/2/3/4/5/6/7 days. These two variables will be analysed as both binary (No (0 day) vs any (1/2/3/4/5/6/7 days)) and continuous variables.
Past 7-day consumption of SSB and water in children reported by parents	1 month	Parents will be asked "On how many of the past 7 days did you drink SSBs?" and "On how many of the past 7 days did you drink water?" For both questions, the options were 0/1/2/3/4/5/6/7 days. These two variables will be analysed as both binary (No (0 day) vs any (1/2/3/4/5/6/7 days)) and continuous variables.

Trial Locations

Locations (1)

Local primary schools; 🇭🇰 Hong Kong, Hong Kong