Evaluation of an in vitro model with a novel statistical approach to measure differences in bacterial survival of extended-spectrum β-lactamase-producing Escherichia coli on an inanimate surface

Table 2 Proportion surviving after 7 h for E. coli ST10 and ST131 per suspension fluid. The survival probability ratio indicates the relative difference in survival probability between ST131 versus ST10

	Proportion surviving after 7 h (% [95% CI])		Survival probability ratio [95% CI]
	ST10	ST131	Survival probability ratio [95% CI]
Water	0.03 [0.02–0.05]	0.06 [0.04–0.10]	2.17 [1.37–3.44]
Saline	0.17 [0.11–0.27]	0.37 [0.23–0.59]
Blood	37.9 [23.9–60.1]	82.3 [51.9–100]

ISSN: 2047-2994