Fig. 1From: Migration to middle-income countries and tuberculosis—global policies for global economiesMedian TB incidence rate/100,000 person-year for each group of country (High, Upper-middle, Low-middle and Low-Income Countries)* 1990–2014. *Median incidence was calculated using panel data, collapsing countries and calculating the median TB incidence by group of country/year. Source: Tuberculosis data extracted from WHO [1]. World Bank [4] was used to classify country groupsBack to article page