Fig. 2From: Epidemiological trends and outcomes of extensively drug-resistant tuberculosis in Shandong, ChinaCases of extensively drug-resistant tuberculosis (XDR-TB) and multidrug-resistant tuberculosis (MDR-TB) in Shandong, China. The percentage of XDR-TB cases in 2015 was 27.3% but was not included in the trend analysis because of incomplete follow-up drug susceptibility data for that year. Chi-Square test for linear trend, 14.097 (P < 0.01)Back to article page