Antibiotic susceptibility of Clostridium difficile is similar worldwide over two decades despite widespread use of broad-spectrum antibiotics: an analysis done at the University Hospital of Zurich

Table 1 Specimen collection available

Total number of patients	n = 94
	"Inpatients" n = 82					"Outpatients" n = 12
Clinical data sets	Data complete of n = 78			Charts missing n = 4		Data complete
Stool analysis positive for toxin/culture; n = 94	+/+	−/+	+/−*	+/+	−/+	+/+	−/+	+/−*
Stool analysis positive for toxin/culture; n = 94	38	31	9	2	2	6	5	1
Antibiotic susceptibility testing done in n = 86	36**	31	4	2	2	6	4**	1

*a stool specimen taken a couple of days apart with growth of C. difficile was used for antibiotic susceptibility testing; an alternative stool specimens was only available in 4/9 cases in the inpatient cohort.
**in two and one cases, respectively, from in- and outpatients, cultures were lost and no antimicrobial susceptibility testing could be done.

ISSN: 1471-2334