Table 5 Gastrointestinal symptoms measured by the Visual Analogue Scale for Irritable Bowel Syndrome

Age (years)

36.78 ± 7.39

40.20 ± 8.75

0.036

Abdominal pain

 Z-score

−0.68 (−2.12–0.64)

0.30 (−0.43–0.70)

0.001

 Absolute score

65.00 (30.00–100.00)

93.00 (73.00–98.00)

 Missing value

2

8

Diarrhea

 Z-score

0.25 (−1.18–0.69)

0.44 (−0.02–0.65)

0.617

 Absolute score

87.00 (45.00–100.00)

95.00 (80.00–98.00)

 Missing value

2

10

Constipation

 Z-score

−0.29 (−2.11–0.57)

0.43 (0.03–0.58)

0.009

 Absolute score

80.00 (30.00–100.00)

95.00 (83.00–98.00)

 Missing value

2

8

Bloating and flatulence

 Z-score

−0.94 (−1.8–0.46)

0.41 (−1.08–0.85)

0.000

 Absolute score

45.00 (20.00–85.00)

81.50 (41.75–96.00)

 Missing value

2

7

Nausea and vomiting

 Z-score

0.33 (−0.95–0.50)

0.37 (0.11–0.48)

0.284

 Absolute score

95.00 (65.00–100.00)

98.00 (92.00–99.00)

 Missing value

2

10

Psychological well-being

 Z-score

−0.52 (−2.54–0.91)

0.19 (−0.57–0.86)

0.005

 Absolute score

75.00 (40.00–95.00)

85.00 (74.00–96.00)

 Missing value

2

4

Influence on daily life

 Z-score

−0.42 (−1.83–0.57)

0.35 (−0.27–0.67)

0.001

 Absolute score

70.00 (30.00–100.00)

96.00 (75.00–98.00)

 Missing value

2

7

Defecation urgency

(Yes/No/Unknown)

37/66/6

11/52/2

0.010

Sensation of incomplete evacuation

(Yes/No/Unknown)

53/50/6

17/46/2

0.050