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Table 2 Patient demographics

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

Variable

SC Group

WC Group

P value

 

n = 43

n = 43

 

Female (%)

26 (60)

35 (81)

0.057

Age (mean years ± SE)

49 ± 2

52 ± 2

0.328

Indication for Testing (%)

  

0.831

Reflux Symptoms

30 (70)

33 (77)

 

Chest Pain

8 (19)

7 (16)

 

Dysphagia

4 (9)

2 (5)

 

Other

1 (2)

1 (2)

 

Total Procedure Duration (manometry

53 ± 4

62 ± 8

0.339

and pH probe insertion, minutes ± SE)

   

Manometry Result (%)

  

0.377

Normal

12 (29)

17 (44)

 

Low LES resting pressure

18 (43)

12 (31)

 

IEM

7 (17)

8 (21)

 

Spastic (DES/nutcracker)

3 (7)

2(5)

 

Other

2 (5)

0 (0)

 

pH Results at Completion

   

Elevated Esophageal Acid Exposure*

24 (56)

19 (44)

0.388

  1. *Based on standard composite scores. Cutoff for SC: Johnston/DeMeester, normal score <22. Cutoff for WC: DeMeester, normal score <14.7. DES, diffuse esophageal spasm; IEM, ineffectual esophageal motility; LES, lower esophageal sphincter; SE, standard error; SC, standard pH catheter; WC, wireless pH capsule.