Abdominal bloating is the most bothersome symptom in irritable bowel syndrome with constipation (IBS-C): a large population-based Internet survey in Japan

Table 3 Associations between the degree of anxiety and GI symptoms in subjects with IBS-C

GI symptoms/Degree of anxiety	None	Sometimes	Often	Always	Kendall’s τ
Abdominal discomfort					0.09**
No (n = 271)	76	153	34	8
Yes (n = 488, 64.3 %)	100	287	77	24
Abdominal pain					0.11**
No (n = 538)	132	323	70	13
Yes (n = 211, 29.1 %)	44	117	41	19
Abdominal bloating					0.08*
No (n = 151)	42	91	13	5
Yes (n = 608, 80.1 %)	134	349	98	27
Abdominal distention					0.11**
No (n = 368)	94	224	39	11
Yes (n = 391, 51.5 %)	82	216	72	21
Sensation of excessive gas					0.11**
No (n = 218)	65	122	25	6
Yes (n = 541, 71.3 %)	111	318	86	26
Tightness in the abdomen					0.11**
No (n = 408)	108	237	52	11
Yes (n = 351, 46.2 %)	68	203	59	21
Abdominal fullness					0.08*
No (n = 636)	157	364	92	23
Yes (n = 123, 16.2 %)	19	76	19	9
Borborygmus					0.06
No (n = 626)	148	367	91	20
Yes (n = 133, 17.5 %)	28	73	20	12
Increase in passing of gas					0.08*
No (n = 369)	99	208	48	14
Yes (n = 390, 51.4 %)	77	232	63	18
Decrease in passing of gas					0.01
No (n = 736)	172	425	109	30
Yes (n = 23, 3.0 %)	4	15	2	2
Incomplete evacuation					0.00
No (n = 326)	72	198	41	15
Yes (n = 433, 57.0 %)	104	242	70	17
Urgency					0.04
No (n = 673)	156	397	95	25
Yes (n = 86, 11.3 %)	20	43	16	7
Sensation of anorectal obstruction/blockage					0.01
No (n = 348)	86	194	54	14
Yes (n = 411, 54.2 %)	90	246	111	18
Frequency of bowel habit in a week					−0.04
> 1 time (n = 15)	3	8	3	1
1 time (n = 60)	6	39	12	3
2 times (n = 156)	37	94	19	6
3 times (n = 152)	40	78	25	9
4 times (n = 85)	22	49	11	3
5 times (n = 79)	17	48	11	3
6 times (n = 52)	12	31	7	2
7 times (n = 111)	26	61	20	4
8 times or more (n = 49)	13	32	3	1

ISSN: 1751-0759