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NCT Number: NCT04793841

Population Burden of STI and Implication for Intervention in Hong Kong

This is a 5-year cross-disciplinary sexually transmitted infection (STI) project involving a) territory-wide and community-based studies (survey and specimen collection); b) simulation of STI transmission dynamics and comparison of STI intervention strategies through mathematical modelling and cost-effectiveness analysis. The aim of this project is to assess the burden and the transmission dynamics of STIs in the general population and men who have sex with men (MSM) in Hong Kong. Around 1300 sexually experienced adults and 900 MSM would be recruited, 100 participants would be invited for individual in-depth interviews. Main outcome measures include STI history and service preference, effectiveness as measured by the proportion of new STI infections (chlamydia, gonorrhoea and human papillomavirus infections) averted above base-case scenario, and incremental cost-effectiveness ratio.

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Key information

Conditions

STI Behavior Communicable Diseases Disease Attributes Genital Diseases Homosexuality Infections Pathologic Processes Pathological Conditions, Signs and Symptoms Sexual Behavior Sexuality Sexually Transmitted Diseases Urogenital Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

The Chinese University of Hong Kong

Hong Kong, Hong Kong, China, 0000

About this study

After completion of baseline questionnaire, the participants are invitied for STI self-sampling. If agree, a package of self-sampling kits, instructions, and packaging materials for return post would be delivered to their selected collection points. The second round of self-sampling would be offered at least one year from the first round of self-sampled specimens collected.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • aged 18 or above
  • ever having sex
  • normally living in Hong Kong
  • can communicate in English or Chinese

Exclusion criteria

  • failed to provide consent

Treatment and study plan

self-sampling kits for STI testing in laboratory

Other

participants in both groups will receive self-sampling kits and deliver the collected samples to laboratory for testing

Primary outcomes

  1. self-reported STI diagnosis in questionnaire

    Time frame: up to 2 years

    number of STI diagnosis

  2. effectiveness of STI intervention strategies

    Time frame: 10 years

    incremental cost-effectiveness ratio

Secondary outcomes

  1. STI symptom reported in questionnaire

    Time frame: 12 months

    types of symptom presentations

  2. willingness to pay for STI testing reported in questionnaire

    Time frame: 12 months

    willingness to pay (HKD)

  3. prevalence of STI estimated through laboratory testing

    Time frame: 12 months

    prevalence of chlamydia trachomatis, Neisseria gonorrhoeae and human papillomavirus infections from self-collected samples

Sponsors and collaborators

Lead sponsor

Chinese University of Hong Kong

Other

Registry information

Official study title

Population Burden of Sexually Transmitted Infections and Implication for Intervention in Hong Kong

Important dates

Study start
2021
Primary completion
2024
Study completion
2024
First posted
Mar 11, 2021
Registry last updated
Mar 17, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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