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Figure 2 | BMC Public Health

Figure 2

From: Distributions and trends in sexual behaviors and HIV incidence among men who have sex with men in China

Figure 2

Distribution of number of acts among (a) regular; (b) casual; (c) commercial; and (d) all partners among Chinese MSM in the past six months during 2002–2010. Notably, since we assume that the distribution of the overall number of sexual acts is the sum of the corresponding lognormal distributions from the separate types of sexual partnerships, this enables us to estimate the distribution of the number of acts in regular sexual partners and casual partners even in the absence of empirical data. Large uncertainties for absent distribution are included for these indicators.

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