Table 4.

Antibiotics used in the ceftazidime-avibactam and polymyxin (B/E) groups

			Study group
			Group A (n = 78)	Group B (n = 26)	All (n = 104)	p-value
Additional agent used	Aztreonam Meropenem Fosfomycin Tigecycline Meropenem + tigecycline Minocycline	n (%)	48 (61.5) 0 (0) 0 (0) 0 (0) 0 (0) 0	0 9 (34.6) 7 (26.9) 2 (7.7) 3 (11.5) 5 (19.2)	48 (46.1) 9 (8.6) 7 (6.7) 2 (1.9) 3 (2.9) 5 (4.8)
Additional treatment duration (days)		Median (range)§	8 (4–14)	8 (5–15)	8 (4–15)	0.908NS

^§p-value by Mann–Whitney U test; the rest of the p-values by Chi-square test or Fisher's exact probability test. p-value < 0.05 is considered to be statistically significant. NS, statistically non-significant