Effectiveness of Interactive School-Based Programs for Preventing Substance Use : A Before-and-After Intervention Study

Substance use behaviors before and after receiving substance use education

Status

Active, not recruiting

Phases

Phase 1

Study type

Interventional

Source

TCTR

Registry ID

TCTR20230921004

Enrollment

475

Registered

2023-09-21

Start date

2016-12-01

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Substance use substance use prevention education over-the-counter drugs school-based education adolescent substance use Attitudes related substance

Interventions

A two hour substance use prevention education intervention that provided knowledge, emphasized motivation for quitting, introduced refusal skills through the Say No game, and wrapped-up the activity w

No Intervention Other

Education

Eligibility

Sex/Gender

All

Age

12 Years to 24 Years

Inclusion criteria

Inclusion criteria: Healthy high school students aged 12 to 24 who were voluntarily participated in this study.

Exclusion criteria

Exclusion criteria: Participants who did not receive the education from study team amd declined to answer the questionaires.

Design outcomes

Primary

Measure	Time frame
Decrease substance use At baseline and 6 months Before and after questionaires	—

Secondary

Measure	Time frame
Associated factors At baseline and after Before and after questionaires	—

Countries

Thailand

Contacts

Public ContactSupinya In iw

Faculty of Medicine Siriraj hospital

supinya.ine@mahido.edu024195996

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026