Table 1 Primary and secondary outcomes with definitions

Confirmed HBV and HCV test uptake

Defined as men who had both HBsAg test uptake and anti-HCV IgG test uptake confirmed through electronic submission of a test report photo showing serology results, age of tester, sex of tester, and date of test within four weeks of enrolment

Secondary outcomes

Confirmed HBV test uptake

Defined as men who had HBsAg test uptake confirmed through electronic submission of a test report photo showing serology results, age of tester, sex of tester, and date of test within four weeks of enrolment

Confirmed HCV test uptake

Defined as men who had anti-HCV IgG test uptake confirmed through electronic submission of a test report photo showing serology results, age of tester, sex of tester, and date of test within four weeks of enrolment

Self-reported HBV test uptake

Defined as men who had HBsAg uptake within four weeks of enrolment, self-reported in follow-up survey

Self-reported HCV test uptake

Defined as men who had anti-HCV IgG uptake within four weeks of enrolment, self-reported in follow-up survey

HBV vaccination uptake

Defined as men who had receipt of at least a one dose of the HBV vaccine within four weeks of enrolment, self-reported in follow-up survey

HBV vaccination uptake among men with confirmed susceptibility to HBV infection

Defined as men with negative HBsAg and negative anti-HBs results confirmed through electronic submission of a test report photo showing serology results, who had receipt of at least one dose of the HBV vaccine within four weeks of enrolment, self-reported in follow-up survey

HIV test uptake

Defined as men who had HIV test uptake within four weeks of enrolment, self-reported in follow-up survey

Chlamydia test uptake

Defined as men who had chlamydia test uptake within four weeks of enrolment, self-reported in follow-up survey

Gonorrhoea test uptake

Defined as men who had gonorrhoea test uptake within four weeks of enrolment, self-reported in follow-up survey

Syphilis test uptake

Defined as men who had syphilis test uptake within four weeks of enrolment, self-reported in follow-up survey

Change in stigma toward people living with HBV

Continuous variable, defined as difference between Toronto Chinese HBV Stigma Scale score assessed at follow-up and baseline. Stigma toward people living with HBV will be measured at baseline and follow-up using 20 survey items that are each on a five point Likert scale. The 20 items were originally developed as the Toronto Chinese HBV Stigma Scale (potential range of 20–100), which has been previously validated and correlated to HBV testing behaviours among Chinese populations [39]. Decreased stigma toward people living with HBV will be defined as a mean composite score that is less at follow-up compared to baseline.

Visit with a physician after hepatitis test uptake

Defined as men who had HBV and/or HCV test uptake and saw a physician to discuss hepatitis test results within four weeks of enrolment, self-reported in follow-up survey