Developing and testing of an interactive internet-based intervention to reduce sexual harm of sexualised drug use (‘chemsex’) among men who have sex with men in Hong Kong

Developing and testing of an interactive internet-based intervention to reduce sexual harm of sexualised drug use ('chemsex') among men who have sex with men in Hong Kong

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN20134522

Enrollment

250

Registered

2021-03-17

Start date

2021-06-15

Completion date

Unknown

Last updated

2023-01-23

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

Conditions

Safe sex to prevent sexually transmitted infections (STI) Infections and Infestations Infections with a predominantly sexual mode of transmission

Interventions

Participants will be randomly assigned to either the intervention group or control group via computer-generated block randomisation (with blocks of size 4) on a 1:1 randomisation ratio

no stratification will be applied. Men who have sex with men will be recruited and randomly allocated into either the intervention (n = 125) or control group (n = 125). Subjects in the intervention gr

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1. Cisgender men who have sex with men 2. Aged =18 years 3. Internet access 4. Able to read and understand Chinese

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

Measure	Time frame
Self-efficacy in refusing risky sexual behaviours and chemsex as measured using the Chinese version of Drug Avoidance Self-Efficacy Scale (DASES), the Self-Efficacy for Sexual Safety scale, and the traditional Chinese version of the Condom Self-Efficacy Scale (CSES) at baseline and 3 months	—

Secondary

Measure	Time frame
1. Intention to have chemsex measured using participant interview at baseline and 3 months 2. Actual engagement in chemsex measured using participant interview at baseline and 3 months 3. Practice of condomless sex both sober and drug-influenced measured using participant interview at baseline and 3 months 4. The number of HIV/STI tests in the previous three months measured using participant interview at baseline and 3 months	—

Measure

Time frame

1. Intention to have chemsex measured using participant interview at baseline and 3 months 2. Actual engagement in chemsex measured using participant interview at baseline and 3 months 3. Practice of condomless sex both sober and drug-influenced measured using participant interview at baseline and 3 months 4. The number of HIV/STI tests in the previous three months measured using participant interview at baseline and 3 months

—

Countries

Hong Kong

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 15, 2026