Overview

The study is a two-phase observational study that assess multiple aspects of study and young men who have sex with men (YMSM).

Phase I of the study will be a cross-sectional descriptive study using a mixed methods data collection (focusing on qualitative data collection) to acquire information necessary for developing a more extensive study on the same matter.

Phase II of the study will be a prospective cohort study using a quantitative data collection.

Findings from phase I will guide the development of phase II which consist of a larger number of YMSM, important baseline and follow-up questionnaires and comorbidities assessments, sexually transmitted infections testing, and integration to care.

This protocol exclusively addresses the phase I of the study.

Once the phase I findings are finalized, the principal investigator will submit the phase II to the IRB of the Faculty of Medicine, Chulalongkorn University.

Eligibility

Inclusion Criteria:

Group 1A: Current chemsex users

1. Men who have sex with men
2. Aged 16-35 years
3. Able to communicate in Thai fluently
4. Current chemsex users
5. Provide informed consent

Inclusion Criteria:

Group 1B: Former chemsex users (discontinued ≥90 days)

1. Men who have sex with men
2. Aged 16-35 years
3. Able to communicate in Thai fluently
4. Former chemsex users (discontinued ≥90 days)
5. Provide informed consent

Exclusion Criteria:

No exclusion criteria for all groups of participants