Table 2.

Types of functional gastrointestinal disorders with Rome IV diagnostic criteria.

Typea	n	% of all respondents	% of FGIDs
Any FGID	83	39.15	100
A. Esophageal disorders	29	13.68	34.94
A2. Functional heartburn	6	2.83	7.23
A3. Functional chest pain	8	3.77	9.64
A4. Globus	15	7.08	18.07
B. Gastroduodenal disorders	37	17.45	44.58
B1. Functional dyspepsia	28	13.21	33.73
B3. Nausea and vomiting disorders	7	3.30	8.43
B4. Rumination syndrome	2	0.94	2.41
C. Bowel disorders	43	20.28	51.81
C1. Irritable bowel syndrome	20	9.43	24.10
C2. Functional constipation	9	4.25	10.84
C3. Functional diarrhea	6	2.83	7.23
C4. Functional abdominal bloating	8	3.77	9.64
D. Central mediated disorders of gastrointestinal pain	2	0.94	2.41
D1. Central Mediated abdominal pain syndrome	2	0.94	2.41
Combined FGIDs	31	14.62	37.35
Two-way combination	18	8.49	21.69
A + B	4	1.89	4.82
A4 + B3	4	1.89	4.82
A + C	4	1.89	4.82
A3 + C1	2	0.94	2.41
A4 + C1	2	0.94	2.41
B + C	10	4.72	12.05
B1 + C1	4	1.89	4.82
B1 + C4	4	1.89	4.82
B1 + C2	2	0.94	2.41
Three-way combination	7	3.30	8.43
A + B + C	7	3.30	8.43
A4 + B1 + C1	4	1.89	4.82
A4 + B1 + C2	3	1.42	3.61
Four-way combination	6	2.83	7.23
A + B + C	6	2.83	7.23
A3 + A4 + B1 + C1	2	0.94	2.41
A2 + A3 + B1 + C1	2	0.94	2.41
A2 + B4 + C1 + C3	2	0.94	2.41

^aThe serial numbers of A–D were coded according to the Rome IV criteria.