Software improvement for evaluation of laryngopharyngeal pH testing (Restech) – a comparison between DataView 3 and 4

Table 1 Comparison of DataView 3 and 4 values (n = 174)

	DataView 3		DataView 4
	mean	Range	mean	Range	P value
RYAN score upright	48.77	2.12-630.6	22.17	0-287	0.0001
% time below threshold upright (pH < 5.5)	1.21	0-19.24	1.32	0-25.4	0.3301
RYAN score supine	5.29	2.17-175.64	1.42	0-28.86	0.0001
% time below threshold supine (pH < 5)	1.17	0-57.41	1.42	0-61.7	0.0069

Table 2 Comparison of Restech measurement values in patients with an abnormal measurement in DataView 3 and their consecutive scores in DataView 4 (n = 72 upright and n = 19 supine)

	DataView 3		Dataiew 4		P value
	mean	Range	mean	Range
RYAN score upright	114.11	10.29-630.6	51.51	0-287	0.0001
% time below threshold upright (pH < 5.5)	2.92	0.11-19.24	2.94	0-2.54	0.9181
RYAN score supine	29.25	6.96-175.64	9.92	0-28.86	0.0304
% time below threshold supine (pH < 5)	10.03	0.1-57.41	12.16	0-61.7	0.0069