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Table 2 Diagnostic categories in 18 case-series 2006–2014

From: Fever of unknown origin (FUO): which are the factors influencing the final diagnosis? A 2005–2015 systematic review

Ref First Author Year Number of patients Infectious Diseases (%) Neoplasm (%) NIID (%) Other (%) No diagnosis (%)
[11] Yu 2014 107 29.9 17.8 16.8 14.0 21.5
[12] Mir 2014 91 44.0 12.0 12.0 5.0 27.0
[13] Naito 2013 121 23.1 10.7 30.6 12.4 23.1
[14] Robine 2014 103 23.5 2.9 30.1 4.9 50.5
[15] Vanderschueren 2014 436 17.0 11.0 24.0 9.9 39.0
[16] Alavi 2013 106 44.3 12.3 17.9 10.4 15.0
[17] Mahmood 2013 205 48.8 12.7 18.6 3.4 16.6
[18] Shi 2013 997 48.0 7.9 16.9 7.1 16.6
[19] Mete 2012 100 26.0 14.0 38.0 2.0 20.0
[20] Pedersen 2012 52 32.0 13.0 55.0 0.0 21.0
[21] Ali-Eldin 2011 93 41.9 30.1 15.0 0.0 12.9
[22] Bandyopadhyay 2011 164 54.9 22.0 11.0 0.0 12.2
[23] Rami 2010 55 32.7 16.4 25.4 5.4 20.0
[24] Hu 2008 142 35.9 12.7 32.4 4.9 14.9
[25] Kucukardali 2007 154 34.4 14.3 30.5 5.2 15.6
[3] Bleeker-Rovers 2007 73 16.0 7.0 22.0 4.0 51.0
[26] Colpan 2007 71 45.1 14.1 26.8 5.6 8.5
[27] Chin 2006 94 57.4 8.5 7.4 8.5 18.1
  Total   3164 37.8 11.6 20.9 6.5 23.2