The Effectiveness of Self-Efficacy Program and Development of Vernonia cinerea (L.) Less. Extract Sugar-free Lozenge Formulation for Assisting Adolescences Avoiding Tobacco

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

TCTR

Registry ID

TCTR20260217004

Enrollment

Registered

2026-02-17

Start date

2017-05-05

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

Target group of the drug dealers are mostly teenagers. The program was based on Bandura about the perception of self competency to avoid narcotics. Self-Efficacy, Vernonia cinerea ,Sugar-free Lozenge Formulation , Adolescences, Tobacco

Interventions

The intervention was a self-efficacy program based on Bandura&#039

s theory, consisting of 6 sessions, 3 hours each, totaling 18 hours. Component 1: Knowledge provision (6 hours) - Education on types, dangers, and harms of tobacco and narcotics, mechanisms of drug ad

Experimental Drug,Experimental Procedure/Surgery

The Effectiveness of Self-Efficacy Program and Development of Vernonia cinerea (L.) Less. Extract Sugar-free Lozenge Formulation ,control

Eligibility

Sex/Gender

All

Age

18 Years to 25 Years

Inclusion criteria

Inclusion criteria: At-risk adolescents enrolled in 1. secondary education under the basic education system in Nakhon Pathom province 2. history of tobacco smoking or alcohol consumption 3. voluntary participation with written consent 4. parental consent obtained (participants under 18 years) 5. willingness to attend all intervention sessions.

Exclusion criteria

Exclusion criteria: 1. withdrawal of consent 2. incomplete program attendance (less than 6 sessions) 3. inability to complete questionnaires 4. absence of parental consent for minors.

Design outcomes

Primary

Measure	Time frame
Knowledge about narcotics 6session 20-item multiple-choice test (4 options per item); Total score 0-20; Higher scores indicate better knowledge,Attitude toward substance use Baseline and post-intervention 10-item questionnaire; 6-point Likert scale; Higher scores indicate more negative attitudes toward drugs,Self-efficacy for avoiding substances Baseline and post-intervention 12-item questionnaire based on Bandura's theory; 6-point Likert scale; Higher scores indicate greater confidence	—

Measure

Time frame

Knowledge about narcotics 6session 20-item multiple-choice test (4 options per item); Total score 0-20; Higher scores indicate better knowledge,Attitude toward substance use Baseline and post-intervention 10-item questionnaire; 6-point Likert scale; Higher scores indicate more negative attitudes toward drugs,Self-efficacy for avoiding substances Baseline and post-intervention 12-item questionnaire based on Bandura's theory; 6-point Likert scale; Higher scores indicate greater confidence

—

Secondary

Measure	Time frame
Substance avoidance behavior Baseline and post-intervention 15-item questionnaire; 6-point Likert scale; Higher scores indicate better avoidance behaviors	—

Countries

Thailand

Contacts

Public ContactThitavan Hongitiyanon

Rambhai Barni Rajabhat University

thitavan.h@rbru.ac.th039319111

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026