Comparison of results from the multiplier, network-based, and SS methods for population size estimation.

<p>The dashed horizontal line is the minimum number of population size (600); this is a lower bound for the PWID population size. For the multiplier method, results from the raw and weighted proportion of traits are presented. For the network-based method, results from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0185711#pone.0185711.t002" target="_blank">Table 2</a> are shown, where the prior mean of the link probability and <i>α</i> vary. Black points and lines correspond to point estimates and posterior quantiles while grey lines represent the semi-parametric bounds. For the SS method, results from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0185711#pone.0185711.t001" target="_blank">Table 1</a> are shown where prior selection and degree specification vary.