Clinical features and outcomes of patients with fever of unknown origin: a retrospective study

BMC Infectious Diseases

Table 4 Outcomes of patients discharged with undiagnosed FUO in different studies

Author/Year	Research type	Total Number of FUO^a	Follow-up time	Number of undiagnosed cases	Number of patients with definite diagnosis	Number of patients with spontaneous resolution	Number of deaths
Knockaert, D. C. (1996) [7]	Retrospective study	61	5 years	49	12	41	6/2^b
Vanderschueren S (2003) [8]	Prospective study	95	574 (125–2052) days	95	0	63	3
Zenone, T. (2006) [10]	Retrospective study	37	–	37	0	29	1
Bleeker-Rovers, C. P. (2007) [2]	Prospective study	37	12 (6–23) months	37	0	21	1
Mansueto, P. (2008) [9]	Retrospective study	29	2 years	21	8	13	4

^a Total number of patients discharged with undiagnosed FUO
^b Six patients died, although the cause of death was considered to be related to the disease that caused FUO in only two cases

ISSN: 1471-2334