Figure 3
From: A sex-role-preference model for HIV transmission among men who have sex with men in China
The outcome varies with errors in the parameter estimates. The effect of different n V (the number of AI sex partner per year of Versatile MSM) on the outcome of ten years' prevalence prediction. The mean value of n V = 12.4 and its standard error is 12.2. R0 = 7.1064 for n V = 24.6, which is almost double of R0 = 3.9296 of n V = 12.4.