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Observational Study
Copyright: ©Author(s) 2026.
World J Gastroenterol. Jul 7, 2026; 32(25): 117254
Published online Jul 7, 2026. doi: 10.3748/wjg.117254
Table 1 Exclusion criteria of voluntary blood donors
Exclusion criteria of voluntary blood donation
Any virus carrier status, any ongoing acute infection, any malignant disease, blood coagulation and other hematological disorders, epilepsy, Parkinson’s disease, rheumatic heart disease, systemic autoimmune diseases, Graves’ disease, chronic kidney disease, pancreatic disease, liver enlargement, heart surgery, any transplantation
HypertensionStarted or modified therapy within 1 month; severe, inadequate hypertension.
Blood pressure< 100 mmHg or > 180 mmHg systolic or > 100 mmHg diastolic
HypothyreosisWithin 180 days from recovery of infection, medicine-induced or traumatic thyroid disease
Hashimoto thyreoiditisSymptomatic, therapy shorter than 3 months, taking corticosteroids
Bronchial asthmaSymptomatic or uncontrolled
Type 2 diabetes mellitusInsulin use
Disc herniationSciatica within 30 days
OsteoporosisSevere osteoporosis
Tachycardia/arrhythmia< 50 bpm or >100 bpm, irregular rhythm for 7 days, presence of murmur
Celiac diseaseSymptomatic
Table 2 General statistical data of the categorical variables, mean ± SD/n (%)
Demographic data
Control (n = 1145)
Irritable bowel syndrome (n = 94)
P value
Age (years)39.14 ± 12.4137.83 ± 11.780.3236
Body mass index27.12 ± 4.8527.62 ± 5.070.3385
Quality of life80.95 ± 14.3975.37 ± 17.990.0004
Household population
Alone125 (10.9)7 (7.4)0.5559
Adults only442 (38.6)39 (41.5)
Adults and children578 (50.5)48 (51.1)
Residence
Urban750 (65.5)68 (72.3)0.1784
Rural395 (34.5)26 (27.7)
Childhood residence
Urban672 (58.7)62 (66.0)0.1681
Rural473 (41.3)32 (34.0)
Occupation
Student153 (13.3)14 (14.9)0.0006
Intellectual509 (44.5)59 (62.8)
Physical483 (42.2)21 (22.3)
Smoking
Smoker282 (24.6)22 (23.4)0.8976
Non-smoker699 (61.1)57 (60.6)
Former smoker164 (14.3)15 (16.0)
Coffee consumption
More than 1519 (45.3)46 (48.9)0.7816
1/day270 (23.6)20 (21.3)
Never356 (31.1)28 (29.8)
Alcohol consumption
Regular45 (3.9)3 (3.2)0.3438
Occasional848 (74.1)76 (80.8)
Never252 (22.0)15 (16.0)
Table 3 Comparison of prevalence of chronic illnesses in blood donors with and without irritable bowel syndrome based on Rome III and IV criteria, n (%)
Item
Blood donors (n = 1239)
P value
With chronic illness
Without chronic illness
Rome IIIPatients with IBS25 (9.6)69 (7.1)0.1714
Patients without IBS236 (90.4)909 (92.9)
Rome IVPatients with IBS3 (1.1)6 (0.6)0.4080
Patients without IBS258 (98.9)972 (99.4)
Table 4 Comparison of prevalence of chronic illnesses in patients with psychiatric diseases with irritable bowel syndrome based on Rome III and IV criteria, n (%)
Item
Patients with psychiatric diseases (n = 695)
P value
With chronic illness
Without chronic illness
Rome IIIPatients with IBS82 (16.8)25 (12.1)0.1144
Patients without IBS406 (83.2)182 (87.9)
Rome IVPatients with IBS29 (5.9)6 (2.9)0.0933
Patients without IBS459 (94.1)201 (97.1)
Table 5 Prevalence of different psychiatric diseases in patients with irritable bowel syndrome based on Rome III and IV criteria, n (%)
P = 0.96
IBS (Rome III)
IBS (Rome IV)
Depression20 (18.7)6 (17.1)
Anxiety10 (9.3)3 (8.6)
Both67 (62.7)24 (68.6)
Neither10 (9.3)2 (5.7)
Table 6 Irritable bowel syndrome prevalence in blood donors and psychiatric patients, n (%)/mean (minimum-maximum)/mean ± SD (minimum-maximum)
ItemBlood donors (n = 1239)Psychiatric patients (n = 695)Patients with psychiatric diseases (n = 695)
Depression (n = 136)
Anxiety (n = 69)
Both (n = 408)
Neither (n = 82)
IBS Rome III94 (7.6)107 (15.4)20 (14.7)10 (14.5)67 (16.4)10 (12.2)
IBS Rome IV9 (0.7)35 (5.0)7 (5.1)3 (4.4)24 (5.9)1 (1.2)
Males699 (56.4)159 (22.9)26 (19.1)17 (24.6)91 (22.3)25 (30.5)
Females540 (43.6)536 (77.1)110 (80.9)52 (75.4)317 (77.7)57 (69.5)
Age 39 (17-66)62.3 ± 13.1 (24-95)62.0 ± 12.4 (24-90)57.9 ± 14.8 (24-81)63.9 ± 12.4 (26-95)58.1 ± 14.8 (30-82)


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