Gastrointestinal specific anxiety in irritable bowel syndrome: validation of the Japanese version of the visceral sensitivity index for university students

Table 3 Age, sex, and inventory scores

Variables	All participants	Non-IBS	IBS+	Reference value [[28]]
Variables	(N= 349)	(N= 310)	(N= 39)	Non-IBS	IBS+
Age	18.8 ± 0.5 [18.7–18.8]	18.8 ± 0.6 [18.7–18.9]	18.8 ± 0.6 (18.6–18.8)	19	19
Sex (% male)	59 [54–64]	63 [57–68]	33 [21–49]	-	-
IBS + (%)	11 [8–15]	-	-	-	-
VSI	15.2 ± 13.6 [13.8–16.6]	14.0 ± 12.9 [12.5–15.4]	25.1 ± 15.3 [20.2–30.1]^**	8.2 [7.2–9.2]	28.0 [22.1–33.9]
ASI	16.6 ± 9.7 [15.7–17.6]	16.1 ± 9.2 [15.0–17.1]	20.8 ± 12.4 [16.7–24.8]^**	18.6 [18.5–18.7]	23.2 [19.5–26.9]
HAD-ANX	8.5 ± 4.0 [8.1–8.9]	8.4 ± 4.0 [8.0–8.9]	9.3 ± 4.5 [7.8–10.7]	6.5 [6.1–6.9]	8.5 [7.7–9.3]
HAD-DEP	7.6 ± 3.1 [7.3–7.9]	7.6 ± 3.1 [7.3–8.0]	7.5 ± 2.9 [6.5–8.4]	3.1 [2.7–3.5]	5.4 [5.0–5.8]
IBS-SI	103.8 ± 86.7 [96.1–114.0]	90.9 ± 77.3 [82.3–99.6]	206.2 ± 91.0 [176.7–225.7]^**	-	-

Data are expressed as: mean ± standard deviation [95% confidence interval].
Abbreviations: VSI Visceral Sensitivity Index, ASI Anxiety Sensitivity Index, HAD-ANX and HAD-DEP subscales of the Hospital Anxiety and Depression Scale, IBS-SI Irritable Bowel Syndrome Severity Index, IBS + positive diagnosis of Irritable Bowel Syndrome, Non-IBS no presence of Irritable Bowel Syndrome.
**p < 0.01 for IBS + vs. Non-IBS.

ISSN: 1751-0759