Cluster randomised controlled trial of expert system based on the transtheoretical ("stages of change") model for smoking prevention and cessation in schools

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN26354360

Enrollment

8352

Registered

2004-01-23

Start date

1997-09-01

Completion date

Unknown

Last updated

2022-11-21

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

Conditions

Mental and behavioural disorders: Addiction Mental and Behavioural Disorders Tobacco dependence

Interventions

The intervention group received six sessions of two types: one computer session and one class lesson for each of the three terms of year 9 (autumn 1997 to summer 1998). For the computer session, the r

Eligibility

Inclusion criteria

Inclusion criteria: 52 schools in the West Midlands region.

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

Measure	Time frame
Prevalence of teenage smoking and proportion of positive stage movements 12 months after the start of the intervention.	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

England, United Kingdom

Outcome results

None listed

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