assessment. Therefore, some of the data presentations and analyses in this report represent only a subset of countries and were interpreted with care to inform conclusions about the whole of the program. For example, analysis of country visit interview data was limited to the countries selected for visits by the committee. In addition, some analyses drew on existing data sources that were available only for some countries, programs, or partners. Some evaluation questions were most applicable only for a subset of countries, such as countries with concentrated epidemics driven by injection drug use. Finally, the time and resources available limited the scope of some analyses, such as those involving review of COPs for which the sheer volume of the documents over all countries and years limited the feasibility of comprehensive review across all countries. Throughout the report, where data analyses that do not represent the whole of the program are presented, the scope of these data is described. Because the committee was not charged to draw conclusions or to make recommendations at the level of specific countries, partners, or programs, analyses of data from subsets of countries or partners are presented in a manner designed to maintain anonymity.