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Table 1 Characteristics of studies and patients enrolled from studies retrieved for meta-analysis

From: Systematic review and meta-analysis for the use of ultrasound versus radiology in diagnosing of pneumonia

Study Year Origin Design Sample size Mean age (years) M/F True positive False positive False negative True negative
Benci et al. [27] 1996 Italy Prospective 75 38.5 50/30 37 0 0 20
Lichtenstein et al. [19] 2004 France Prospective 32 58 Not mentioned 111 0 8 265
Lichtenstein et al. [28] 2004 France Prospective 117 53 37/23 59 1 6 51
Lichtenstein et al. [29] 2008 France Prospective 260 68 140/120 74 10 9 167
Parlamento et al. [30] 2009 Italy Prospective 49 60.9 31/81 31 0 1 17
Cortellaro et al. [31] 2010 Italy Prospective 120 69 77/43 80 2 1 37
Xirouchaki et al. [32] 2011 Greece Prospective 42 57.1 34/8 66 4 0 14
Reissig et al. [33] 2012 Europe Prospective 356 63.8 228/134 211 3 15 127
Testa et al. [34] 2012 Italy Prospective 67 55 Not mentioned 32 5 2 28
Unluer et al. [24] 2013 China Prospective 72 66.3 35/37 27 7 1 37
Luri [23] 2009 Italy Prospective 32 4.5 60 20 2 8 2
Shah [35] 2012 US Prospective 200 3 112/88 31 18 146 5
Hadeel and Dien [25] 2013 Egypt Prospective 75 Neonates Not mentioned 64 4 7 0
Copetti [36] 2008 Italy Prospective 144 77.6 72/72 60 0 0 19
Caiulo VA [26] 2013 Italy Prospective 88 5.1 56/47 88 0 1 13
Nafae [37] 2013 Egypt Prospective 100 50.6 56/44 61 1 1 17
Liu [38] 2014 China Prospective 179 72 124/99 80 0 5 27
Esposito [39] 2014 Italy Prospective 103 5.6 56/47 52 3 1 47
Nazerian [40] 2015 Italy Prospective 285 71.14 133/152 72 9 15 189
Bourcier [41] 2014 France Prospective 144 77.6 72/72 117 9 6 12