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. 2016 Dec 7;113(51):14668–14673. doi: 10.1073/pnas.1617258113

Fig. 4.

Fig. 4.

Ukrainian IDU data: estimates of the proportion of IDUs hospitalized to state drug treatment in-patient clinics during 2010 (A), the proportion of IDUs who participated in the state SMT program (B), the proportion of IDUs registered at NGOs that provide HIV prevention services (C), and the average number of HIV rapid tests distributed by NGOs that are used by each registered IDU (D). The figures show 80% (dark) and 95% (light) confidence intervals obtained from the naive proportion variance estimator, the Volz–Heckathorn variance estimator, and the tree bootstrap for two Ukrainian cities, Simferopol and Bila Tserkva.