Table 1 Subjects Demographics and Clinical Characteristics among Subgroups of GERD Patients and Controls

Demographic characteristics

Age, yrs (Mean ± SE)

56.7 ± 5.9

44.5 ± 3.9

58.1 ± 3.8

47.9 ± 2.2

38.0 ± 3.7 ^a

Sex (M/F)

7/2

6/5

4/4

5/6

5/6

Symptom assessment

In RDQ

Frequency (Mean ± SE)

7.9 ± 2.8

9.5 ± 2.4

7.9 ± 1.1

9.0 ± 1.5

-

Extent (Mean ± SE)

7.7 ± 3.0

9.5 ± 2.4

7.8 ± 1.4

9.2 ± 1.8

-

Total score (Mean ± SE)

15.6 ± 5.7

19.1 ± 4.2

15.6 ± 2.2

18.2 ± 3.0

-

24 hr pH monitoring

SI [M (QR)]

100 (0-100)

60 (16.7-100)

100 (91.67-100)

0 (0)

-

DM scores [M (QR)]

28.6 (13.9-51.4) ^b

37.4 (27.7-90.6) ^c

6.9 (3.6-12.6)

3.9 (1.0-7.1)

5.8 (4.6-9.6)