Table 6.

Distribution and Comparison of FICI of 54 XDR-MTB Strains from Four Dual-Drug Combinations

FICI Value	INH+RIFa	Pa+RFBb	Pa+RFPc	MXF+Pad
≤0.5	6 (11.1)e	11 (20.4)	28 (51.9)	3 (5.6)
0.5< and ≤4	48 (88.9)	41 (75.9)	26 (48.1)	51 (94.4)
>4	0	2 (3.7)	0	0

Notes: P value for a vs b comparison was 0.4658; P value for a vs c comparison was <0.0001; P value for a vs d comparison was 0.4862; P value for b vs c comparison was 0.0004; P value for b vs d comparison was 0.0001; P value for c vs d comparison was <0.0001; e, the data in and outside the brackets represented the percentages and frequencies.