Using the theory of planned behaviour to increase chlamydia testing in young people

A brief theory-based online intervention to increase uptake of chlamydia testing in university students aged 18-25

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN82617454

Enrollment

158

Registered

2014-07-21

Start date

2014-09-30

Completion date

Unknown

Last updated

2020-09-21

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

Conditions

Chlamydia Infections and Infestations

Interventions

After completion of an online baseline questionnaire assessing demographics, anxiety, depression, sexual behaviour and previous testing for chlamydia, participants will be randomly assigned to one of

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Students aged 18-25 attending the University of Sheffield

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

Measure	Time frame
1. Chlamydia testing intentions, measured post-intervention 2. Uptake of chlamydia testing in the event of having unprotected sex and/or a new sexual partner, measured at the end of the academic year	—

Secondary

Measure	Time frame
1. Direct measures of the TPB (Ajzen, 1988), measured post-intervention 2. Belief strength (Ajzen, 1988) ? beliefs targeted in the messages, measured post-intervention	—

Countries

United Kingdom

Outcome results

None listed

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