Evaluation of a sex education lesson on chlamydia to see whether it increases the likelihood that young adults will use condoms to protect against this sexually transmitted infection (STI)

Increasing young adults' condom use intentions and behaviour through changing chlamydia risk and coping appraisals: a cluster randomised controlled trial of efficacy

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN54091015

Enrollment

770

Registered

2012-12-28

Start date

2013-01-01

Completion date

Unknown

Last updated

2018-01-08

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

Conditions

Chlamydia trachomatis Infections and Infestations Sexually transmitted chlamydial infection of other sites

Interventions

In the experimental group, participants will receive the school's standard teaching on STIs plus a theory- and evidence-based lesson on chlamydia. In the control group participants will receive just

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Aged 13-16 years old 2. Attending a secondary school in England which has a Sex and Relationships Education (SRE) protocol and curriculum 3. Have not received any previous formal education on STIs through school

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

Measure	Time frame
Intention to use condoms during vaginal sex with casual sexual partners over the next three months	—

Secondary

Measure	Time frame
1. Use of condoms during vaginal sex with casual sexual partners over three months post delivery 2. Perceived likelihood of chlamydia 3. Perceived severity of chlamydia 4. Response efficacy for condom use 5. Self-efficacy for using condoms during vaginal sex with casual sexual partners over the next three months	—

Countries

United Kingdom

Outcome results

None listed

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