The effect of an interpersonal communication campaign on increasing knowledge and reducing use of khat, amphetamine and tobacco among male students of high schools in Jazan City

Unblinded cluster-randomised controlled trial on the effect of an interpersonal communication campaign on increasing knowledge and reducing use of khat, amphetamine and tobacco among male students of high schools in Jazan City

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN71720191

Enrollment

2625

Registered

2018-10-16

Start date

2018-11-04

Completion date

Unknown

Last updated

2019-02-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Use of khat, amphetamine and tobacco Not Applicable Use of khat, amphetamine and tobacco

Interventions

Current interventions as of 17/01/2019: This study has 3 arms. Nine male schools in Jazan city will be randomised to one of the three arms using the close envelope technique.

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1. Enrolled in one of the selected schools 2. Aged 15-25 3. Willing and able to provide informed consent 4. Proxy consent from guardians

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

Measure	Time frame
Current: The following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline, 12 and 36 week follow-up: 1. Proportion of participants who report using khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) 2. Proportion of participants who report having knowledge about the harmful effects of khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) Previous: The following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline and at the 24 week follow-up: 1. Proportion of participants who report using khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) 2. Proportion of participants who report having knowledge about the harmful effects of khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use)	—

Measure

Time frame

Current: The following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline, 12 and 36 week follow-up: 1. Proportion of participants who report using khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) 2. Proportion of participants who report having knowledge about the harmful effects of khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) Previous: The following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline and at the 24 week follow-up: 1. Proportion of participants who report using khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use) 2. Proportion of participants who report having knowledge about the harmful effects of khat, amphetamines or smoking tobacco products (each substance will be considered individually, as well as aggregated use)

—

Secondary

Measure	Time frame
Current: Changes in the following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline, 12 and 36 week follow-up: 1. Proportion of participants who perceive the dangers of khat, amphetamine and tobacco, yet still report using substances (each substance will be considered individually, as well as aggregated perceptions) 2. Proportion of participants who have quit using khat, amphetamine and tobacco at 6 months (this will be split into years ago and since the onset of the intervention) Previous: Changes in the following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline and the 24 week follow-up: 1. Proportion of participants who perceive the dangers of khat, amphetamine and tobacco, yet still report using substances (each substance will be considered individually, as well as aggregated perceptions) 2. Proportion of participants who have quit using khat, amphetamine and tobacco at 6 months (this will be split into years ago and since the onset of the intervention)	—

Measure

Time frame

Current: Changes in the following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline, 12 and 36 week follow-up: 1. Proportion of participants who perceive the dangers of khat, amphetamine and tobacco, yet still report using substances (each substance will be considered individually, as well as aggregated perceptions) 2. Proportion of participants who have quit using khat, amphetamine and tobacco at 6 months (this will be split into years ago and since the onset of the intervention) Previous: Changes in the following will be assessed using the Youth Tobacco, Khat and Amphetamine Prevalence and Knowledge Questionnaire at the baseline and the 24 week follow-up: 1. Proportion of participants who perceive the dangers of khat, amphetamine and tobacco, yet still report using substances (each substance will be considered individually, as well as aggregated perceptions) 2. Proportion of participants who have quit using khat, amphetamine and tobacco at 6 months (this will be split into years ago and since the onset of the intervention)

—

Countries

Saudi Arabia

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026