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Table 1 Overview of the three study arms

From: Pay-it-forward gonorrhea and chlamydia testing among men who have sex with men and male STD patients in China: the PIONEER pragmatic, cluster randomized controlled trial protocol

Trial Arm

Financial Component of Gonorrhea/Chlamydia Testing*

Community Engagement

Standard Pay-it-forward arm

Free gonorrhea/chlamydia testing for all recruited participants in both the MSM-led and public STD clinics

Passive: viewing postcards and materials written by others encouraging gonorrhea/chlamydia testing

Community-engaged Pay-it-forward arm

Free point-of-care gonorrhea/chlamydia testing for all recruited participants in both the MSM-led and public STD clinics

Active: multi-stakeholder co-creation activities to develop essential components of the intervention and implementation strategies; writing postcards; opportunity to donate to support others

Control arm

Fee-based point-of-care gonorrhea/chlamydia testing

None