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. 2015 Jun;21(6):977–983. doi: 10.3201/eid2106.141329

Table 3. Resistance patterns of drugs effective in vitro for multidrug-resistant tuberculosis.

Total, N = 1,254 Candidate effective drugs
Short regimen, FQ-S and SLI-S, n = 952 BDQ-containing regimen
Combined FQ-R or SLI-R,† n = 302 FQ-R only, 
n = 73 SLI-R only, 
n = 155 XDR, 
n = 74
Median 5 5 3 4 3 2
Interquartile range 4–6 5–6 2–4 4–5 3–4 1–2
Range 0–7 3–7 0–6 2–6 1–5 0–4

*Drug susceptibility test results were analyzed for 7 drugs: high-dose isoniazid, ethambutol, FQ, aminoglycoside, capreomycin, ethionamide, and para-aminosalicylic acid; BDQ, bedaquiline; FQ, fluoroquinolone; R, resistant; S, susceptible; SLI, second-line injectable drug; XDR, extensively drug-resistant.
†Includes FQ-R only, SLI-R only, and XDR cases combined.