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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Clin Pulm Med. 2014 Mar 1;21(2):81–85. doi: 10.1097/cpm.0000000000000031

Table 1.

Study IPF
(n)		 Controls (n) Distal
Esophageal
Reflux		 Proximal
Esophageal
Reflux
Tobin 1998 4 17 8 (non-IPF ILD) 88% 71%
Patti 2005 20 18 n/a 66% 33%
Salvioli 2006 19 65 10 (non-IPF ILD) 67% -
Raghu 2006 6 18 133 (asthma) 76% 63%
Sweet 2007 5 30 n/a 67% 30%
Savarino 2013 18 40 40 (non-IPF ILD)
40 (healthy volunteers)		 83 % 66%

IPF – idiopathic pulmonary fibrosis, ILD – interstitial lung disease