Fig. 6

Trajectory analysis plot of PrEP risk perception four 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 = 178, 27.43%); the blue line represents “Category 2” (n = 315, 50.32%); the green line represents “Category 3” (n = 11, 1.76%); the purple line represents “Category 4” (n = 122, 19.49%)