.
For subjective norm on condom use, 28.3% agreed that MSM do not usually use condoms during anal intercourse with RP. For perceived behavioral control over condom use with RP, a majority perceived that they and their RP could persuade each other to use condoms (77.2% and 77.2%, respectively) (S1 Table). As for behavioral intention, 74.9% of the participants intended to use condom with their RP every time during anal intercourse in the next three months (Table 2).