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Observational Study
Copyright: ©Author(s) 2026.
World J Gastroenterol. Nov 28, 2026; 32(44): 121290
Published online Nov 28, 2026. doi: 10.3748/wjg.121290
Table 1 Baseline characteristics of adult patients with newly diagnosed inflammatory bowel disease, mean ± SD/n (%)
Characteristics
Crohn’s disease (n = 16598)
Ulcerative colitis (n = 39737)
P value
Age (years)30.2 ± 14.642.26 ± 16.0< 0.0001
Age groups< 0.0001
18-40 years13060 (78.6)18543 (46.7)
41-64 years2846 (17.2)17416 (43.8)
≥ 65 years692 (4.2)3778 (9.5)
Sex (male)7838 (47.2)28804 (72.5)< 0.0001
Type of treatment< 0.0001
Advanced therapy6758 (40.7)4447 (11.2)
Non-advanced therapy9840 (59.3)35290 (88.8)
Location of medical institution< 0.0001
Metropolitan area6918 (41.7)14157 (35.6)
Non-metropolitan area9680 (58.3)25580 (64.4)
Comorbid disease
Obesity91 (0.6)213 (0.5)0.5855
Pulmonary disease11091 (66.8)27818 (69.9)1.0000
Renal disease380 (2.3)1009 (2.5)0.4213
Liver disease8549 (51.5)22469 (56.5)0.0004
Rheumatic disease1518 (9.1)4523 (11.4)< 0.0001
Diabetes mellitus1932 (11.6)8043 (20.2)< 0.0001
Hypertension2311 (13.9)10,840 (27.2)< 0.0001
Cardiovascular disease1026 (6.2)4548 (11.4)< 0.0001
Any malignancy736 (4.4)2648 (6.7)< 0.0001


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