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Table 1 Survival probabilities per hour (for time period t < 7 h) and per day (for time period t > 7 h) for E. coli ST10 and ST131 per suspension fluid. The survival probability ratio indicates the relative difference in survival between ST131 versus ST10

From: 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

  t < 7 h t > 7 h
Proportion surviving per hour (% [95% CI]) Survival probability ratio [95% CI] Proportion surviving per day (% [95% CI]) Survival probability ratio
[95% CI]
ST10 ST131 ST10 ST131
Water 25.6 [23.6–27.7] 29.1 [26.9–31.5] 1.14
[1.05–1.23]
90.2 [88.2–92.3] 89.0 [87.0–90.9] 0.99
[0.97–1.00]
Saline 34.6 [32.0–37.3] 39.3 [36.4–42.5] 92.2 [90.5–94.0] 91.0 [89.3–92.7]
Blood 85.1 [78.8–91.9] 96.8 [89.6–104.5] 87.5 [85.8–89.1] 86.3 [84.6–87.9]