Fig. 2From: Primary drug resistance of mycobacterium tuberculosis in Shandong, China, 2004–2018Overall first-line drug resistance for INH, RIF, EMB, and SM in primary cases of tuberculosis in Shandong China, 2004–2018. The proportions of INH-, RIF-, EMB-, and SM-resistance were calculated as follows: (the quantity of each subgroups/ the quantity of total primary DR-TB subgroups in the same year)*100%. The χ2 and linear regression results are shown in Table 5 in Appendix. EMB, ethambutol; INH, isoniazid; RFP, rifampin; SM, streptomycinBack to article page