Table 1.

SPIRIT diagram for the schedule of enrolment, interventions, and assessments

	Study period
	Enrolment	Allocation	Post-allocation		Close-out
Timepoint	-t1	0	T0	T1	T2
Enrolment:
Eligibility screen	X
Informed consent	X
Allocation		X
Interventions:
Intervention group			X	X
Control group			X	X
Assessments:
Primary outcome and secondary outcomesa	X
Primary outcome and secondary outcomesa				X	X

Note: The study outcomes will be measured in both groups at baseline and at 3 months (T1) and 6 months (T2) after baseline

^a The primary outcome is the frequency of condomless anal sex in the past 3 months. The secondary outcomes are the frequency of group sex and chemsex, self-efficacy and attitudes toward condom use, and frequency of HIV and other STI testing