Table 1. Parameters, their meaning and values.

Parameter	Meaning	Value
β	Rate of bacterial transmission	0.01–0.5 day-1 [28,29]
pi	Probability of developing resistance to antibiotic i during treatment	0–0.3 [30,31]
γ	Rate of clearance due to the patient's immune system	0.03 day-1
τ(1−pi)	Rate of clearance due to antibiotic i	$\frac{1}{7}$ day-1 [20]
c	Rate of patient turnover (length of stay-1)	0.1 day-1 [28]
λV	Entrance rates of patients of class V	Varies (day-1 units)
fV	Resistance frequency of incoming patients, of the class V	Varies
$f_{R_3}$	Resistance frequency of incoming patients, of the restricted antibiotic (antibiotic 3)	0.001 [32,33]
d	Delay of correct treatment factor	0.778 [34]
π	Hospital size relative to community	$\frac{1}{300}$ [35]
Χi	Fraction of patients initially treated with antibiotic i	Determined by strategy
${\chi }_{i,j}^i$	Fraction of patients treated with antibiotic i, for which resistance to antibiotic k ≠ i, j was established.	Varies
t1–t0	Duration of time the dynamics are tested for.	20–100 years