Fig. 5

Trajectory analysis plot of PrEP risk perception three categories in MSM population. The horizontal coordinate is the time of follow-up, and the vertical coordinate is the score of the PrEP risk perception. The red line represents “Category 1” (n = 477, 76.20%); the blue line represents “Category 2” (n = 137, 21.89%); the green line represents “Category 3” (n = 12, 1.91%)