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Table 1 Demographic characteristic of enrolled patients in the prospective cohort

From: Small intestinal bacterial overgrowth is associated with irritable bowel syndrome and is independent of proton pump inhibitor usage

 

No SIBO (n = 739)

SIBO (n = 158)

p

Age (years, mean ± SD)

63.3 ± 17.0

69.7 ± 17.4

<0.0001

Age ≥60 years (n, %)

475 (64.3)

129 (81.6)

<0.0001

BMI (kg/m2, mean ± SD)

26.5 ± 5.3

25.6 ± 5.4

0.071

BMI ≥22 kg/m2 (n, %)

637 (86.5)

128 (81.0)

0.064

Presence of IBS (n, %)

159 (21.5 %)

93 (58.9 %)

<0.0001

Type of IBS (n, %)

   

 Predominant-diarrhea

44 (6.0)

33 (20.9)

<0.0001

 Predominant-constipation

28 (3.5)

8 (5.1)

0.382

 Mixed type

87 (11.8)

52 (32.9)

<0.0001

Co-morbidities (n, %)

   

 Type 2 diabetes mellitus

171 (23.1)

53 (33.5)

0.008

 Chronic heart failure

192 (26.0)

49 (31.0)

0.200

 Chronic obstructive pulmonary disease

74 (10.0)

16 (10.02)

1.000

 Chronic renal disease

20 (2.7)

8 (5.1)

0.131

 Solid tumor malignancy

67 (9.1)

11 (7.0)

0.441

History of drug intake (n, %)

   

 PPIs

149 (20.2 %)

35 (22.2 %)

0.588

 Non-steroidal anti-inflammatory drugs

30 (4.1 %)

11 (7.0)

0.139

 Low-dose aspirin

139 (18.8)

34 (21.5)

0.438

 Acenocoumarone

63 (8.5 %)

15 (9.5)

0.644

 H2-blockers

15 (2.0)

2 (1.3)

0.751

 Antacids

23 (3.1)

8 (5.1)

0.230

Clinical reason for gastroscopy (n, %)

   

 Dyspepsia

422 (57.1)

94 (59.5)

0.596

 Anemia

327 (44.2)

83 (52.5)

0.065

 Unknown fever

21 (2.8)

7 (4.4)

0.312

Endoscopic findings (n, %)

   

 Gastritis

388 (52.5)

58 (36.7)

<0.0001

 Duodenal ulcer

46 (6.2)

12 (7.6)

0.481

 Gastric ulcer

9 (1.2)

1 (0.6)

1.000