Table 2. Dose-response relationship of screening intensity and incidence of hospital-onset ESBL-producing Enterobacteriaceae in screening hospitals (2009).

Hospital	% of patients screened forESBL-E on admission	% of patients with a clinical ESBL-E isolate within 72 hours of admission without an admission screen	Incidence of HO-ESBL-E clinical isolates per 1,000 inpatient days
R4	87.3	37.5	0.047
R6	62.7	47.1	0.058
R5	73.6	39.3	0.106
R1	41.3	13.3	0.106
R3	26.6	62.5	0.112
R2	47.1	72.3	0.154