Figure 1: The annual prevalence of HIV among Internet-based MSM was 5.7% (18/315), 12.5% (17/136), 14.8% (9/61), 16.4% (31/189), 16.8% (21/125), and 20.7% (36/174). And the annual prevalence of HIV among non-Internet-based MSM was 7.0% (29/412), 13.5% (21/156), 11.3% (7/62), 13.3% (22/166), 10.5% (8/76), and 14.7% (16/981).