Unsedated peroral wireless pH capsule placement vs. standard pH testing: A randomized study and cost analysis

BMC Gastroenterology

Table 3 Grouped Outcomes

Variable	SC Group	WC Group	P value
	n = 43	n = 43
Manometry Discomfort ^a
(mm VAS ± SE)
Nasal	40 ± 3	33 ± 4	0.320
Throat	40 ± 3	34 ± 3	0.165
Chest	15 ± 3	14 ± 3	0.738
Overall	39 ± 3	34 ± 3	0.285
pH Placement Discomfort ^a
(mm VAS ± SE)
Nasal	36 ± 4	6 ± 2	<0.001
Throat	37 ± 3	32 ± 4	0.317
Chest	13 ± 3	14 ± 3	0.968
Overall	33 ± 3	29 ± 4	0.406
pH Test Discomfort ^a
(mm VAS ± SE)
Nasal	39 ± 3	10 ± 3	<0.001
Throat	43 ± 4	19 ± 4	<0.001
Chest	14 ± 3	29 ± 4	0.001
Overall	39 ± 4	26 ± 4	0.012
Eating and Drinking (mm VAS ± SE,	51 ± 4	75 ± 5	<0.001
100 = completely normal)
Ability to do Usual Activities (mm	75 ± 5	92 ± 2	<0.001
VAS ± SE, 100 = completely normal)
Would you Repeat the Test Again?	51	88	<0.001
(% Yes)

^a100 = worst discomfort. SE, standard error; SC, standard pH catheter; WC, wireless pH capsule; VAS, visual analogue scale.

ISSN: 1471-230X