BPG is committed to discovery and dissemination of knowledge
Retrospective Cohort Study
Copyright: ©Author(s) 2026.
World J Gastroenterol. Jul 21, 2026; 32(27): 120681
Published online Jul 21, 2026. doi: 10.3748/wjg.120681
Table 1 Demographic characteristics of adult nongeriatric and geriatric patients with inflammatory bowel disease
Total, n = 1245
UC, n = 618
CD, n = 627
Older-onset, n = 56
Younger-onset, n = 1189
P value/OR (95%CI)
Older-onset UC, n = 39
Younger-onset UC, n = 579
P value/OR (95%CI)
Older-onset CD, n = 17
Younger-onset CD, n = 610
P value/OR (95%CI)
Age at the onset of IBD (median year)71.546< 0.0017249< 0.0017143< 0.001
Total disease duration (median year)611< 0.001612< 0.001611< 0.001
Prodromal period (median month)340.687210.2477110.976
Female/male15 (27)/41 (73)464 (42)/725 (58)0.0668 (21)/31 (79)215 (37)/364 (63)0.0367 (41)/10 (59)249 (41)/361 (59)0.036
Smokers (current/ex/non)6 (10)/29 (52)/21 (38)277 (23)/368 (31)/544 (46)0.0034 (10)/20 (51)/15 (39)75 (13)/206 (36)/298 (51)0.1432 (12)/9 (53)/6 (35)202 (33)/162 (27)/246 (40)0.04
Family history of IBD2 (4)155 (13)0.03/0.25 (0.06-1.01)1 (2.6)80 (13.8)0.0441 (5.9)75 (12.3)0.708
Surgery during follow-up20 (35.7)464 (39)0.6198 (20.5)89 (15.4)0.39312 (70.6)375 (61.5)0.446
Hospitalized at the time of diagnosis13 (23.2)422 (35.5)0.0605 (12.8)142 (24.5)0.0978 (47.1)280 (45.9)0.925
Hospitalized for conditions related to IBD23 (41.1)571 (48)0.30914 (35.9)184 (31.8)0.5949 (52.9)387 (63.4)0.376
BMI (kg/m2)25240.10924.5250.66329230.016
UC/CD39 (69.6)/17 (30.4)579 (48.7)/610 (51.3)0.002/2.42 (1.35-4.32)------
UC (disease extent)
Proctitis6 (15.4)53 (9.2)0.4146 (15.4)53 (9.2)0.414---
Left side17 (43.6)288 (49.7)17 (43.6)288 (49.7)---
Extensive16 (41)238 (41.1)16 (41)238 (41.1)---
CD (disease location)
Ileal (L1)9 (52.9)260 (42.9)0.005---9 (52.9)260 (42.9)0.005/1.49 (1.10-2.10)
Colonic (L2)1 (5.9)81 (13.1)---1 (5.9)81 (13.1)
Ileo-colonic (L3)5 (29.4)267 (43.4)---5 (29.4)267 (43.4)
Upper GI disease (L4)2 (11.8)2 (0.6)---2 (11.8)2 (0.6)
CD (disease behavior)-
Inflammatory disease (B1)12 (70.6)457 (74.8)0.065---12 (70.6)457 (74.8)0.065
Stenosing (B2)4 (23.5)49 (8.5)---4 (23.5)49 (8.5)
Penetrating (B3)1 (5.9)104 (16.7)---1 (5.9)104 (16.7)
CD P (perianal disease)3 (17.6)202 (32.7)0.180---3 (17.6)202 (32.7)0.180
EIMs18 (32.1)606 (51)0.006/0.46 (0.26-0.81)12 (30.8)272 (47)0.04/0.50 (0.25-1.02)6 (35.3)334 (54.8)0.112
Erythema nodosum0270.6300111.00161.0
Pyoderma gangrenous091.0031.0061.0
Peripheral arthralgia103800.02661680.06742120.337
Peripheral arthritis01070.0120360.1570710.241
Back pain92010.8715820.81641190.756
Ankylosing spondylitis1680.3631271.00410.619
Sacroiliitis0310.3960101.00211.0
Aphthous ulcer42380.0172122 g0.016/0.20 (0.05-0.86)21160.752
Thromboembolism0310.3960150.6150161.0
Osteoporosis2190.243270.1050121.0
PSC2190.243270.1050121.0
Uveitis0161.0061.00101.0
Episcleritis05021.0031.0
Medications (conventional)
Thiopurine9 (16.1)391 (32.9)0.008/0.39 (0.19-0.81)7 (17.9)100 (17.3)0.9142 (11.8)291 (47.7)0.003/0.08 (0.01-0.41)
Methotrexate051 (4.3)0.16505 (0.9)1.0046 (7.5)0.628
Sulfasalazine053 (4.5)0.167010 (1.7)1.0043 (7)0.622
Mesalazine10 (17.9)407 (34.2)0.0118 (20.5)122 (21.1)0.9342 (11.8)285 (46.7)0.004
Budesonide11 (19.6)324 (27.2)0.2109 (23.1)114 (19.7)1.02 (11.8)210 (34.4)0.243
Steroids075 (6.3)0.04402 (0.3)0.608073 (12)0.051
Cyclosporin1 (1.8)1 (0.1)0.088000.91400-
Biological therapy15 (26.8)586 (49.3)0.001/0.38 (0.21-0.69)11 (28.2)157 (27.1)0.8824 (23.5)429 (70.3)< 0.001/0.13 (0.04-0.40)
Infliximab9 (16.1)365 (30.7)0.02/0.43 (0.20-0.90)6 (15.4)99 (17.1)0.7833 (17.6)266 (43.6)0.033/0.28 (0.08-0.97)
Adalimumab6 (10.7)384 (32.8)< 0.001/0.25 (0.11-0.59)4 (10.3)93 (16.1)0.3352 (11.8)291 (47.7)0.003/0.15 (0.03-0.64)
Vedolizumab6 (10.7)111 (9.3)0.7306 (15.4)36 (6.2)0.041/2.74 (1.08-6.97)075 (12.3)0.246
Ustekinumab1 (1.8)81 (6.8)0.1731 (2.6)13 (2.2)0.603069 (11.1)0.240
Sertolizumab031 (2.6)0.39603 (0.5)1.0028 (4.6)1.0
Steroid dependence21 (37.5)532 (44.7)0.2861 (2.6)6 (1)0.6495 (29.4)306 (50.2)0.091
Steroid resistance4 (7.1)30 (2.5)0.0624 (10.3)16 (2.8)0.032014 (2.3)1.0
IM resistance8 (14.3)409 (34.4)0.002/0.32 (0.15-0.68)4 (10.3)99 (17.1)0.2674 (23.5)310 (50.8)0.026/0.30 (0.10-0.90)
Thiopurine side effects7 (12.5)141 (11.9)0.8854 (10.3)43 (7.4)0.5273 (17.6)98 (16.1)0.745
Methotrexate side effects2 (3.6)44 (3.7)1.002 (0.3)1.0042 (6.9)0.338
Biologic resistance/intolerance015 (3)1.006 (1)1.009 (1.5)0.377
Baseline Hb concentration (mg/L)12.6 (2.3)13 (2.8)0.33213 (2.1)12.9 (2.9)0.57112.4 (2.3)13 (2.8)0.445
Baseline albumin concentration (g/L)41 (8.75)42 (9)0.57441 (11)43 (8)0.09342 (10)41 (-)0.701
Baseline CRP level (mg/L)11.4 (28.7)10.2 (26.9)0.7224.8 (30.6)9.1 (24.3)0.49117.3 (23)11.7 (31)0.724
Baseline CDAI (CD)302 (277)297 (179)0.728-302 (277)297 (178)0.377
Baseline total Mayo score9 (3)9 (4)0.8479 (3)9 (4)0.800-9.3 2.4-
Baseline partial Mayo score7 (2)7 (2)0.7107 (2)7(2)0.730-6.7 1.8 -


Write to the Help Desk