Observational Study
Copyright ©The Author(s) 2024.
World J Gastroenterol. Aug 7, 2024; 30(29): 3465-3478
Published online Aug 7, 2024. doi: 10.3748/wjg.v30.i29.3465
Table 1 Patient characteristics, n (%)
Parameter
CD (n = 223)
UC (n = 207)
P value
Sex, M/F95/128101/1060.198
Age at enrolment (yr)40 (30-50)41 (32-52)0.509
Age at diagnosis (yr)26 (20-35)28 (21-39)0.565
Residence at diagnosis0.554
    Village12 (5.4)14 (6.8)0.537
    Small-town18 (8.1)18 (8.7)0.801
    Medium-sized town24 (10.8)14 (6.8)0.149
    Large city165 (74.0)152 (73.9)0.977
    Abroad1 (0.4)5 (2.4)0.081
Patient waiting time (mo)2.0 (0.5-6.0)1.0 (0.5-4.0)0.051
Physician time to diagnosis (mo)5.5 (0.75-23.5)1.0 (0-5.0)< 0.001
Total diagnostic time (mo)12.0 (6.0-24.0)4.0 (1.5-12.0)< 0.001
Predominant symptom
    Diarrhea97 (43.5)101 (48.8)0.239
    Constipation1 (0.4)1 (0.5)0.954
    Abdominal pain74 (33.2)16 (7.7)< 0.001
    Heartburn1 (0.4)0 (0)0.336
    Bloating0 (0)3 (1.4)0.070
    Blood in stool11 (4.9)70 (33.8)< 0.001
    Nausea/vomiting9 (4.0)0 (0)0.004
    Skin1 (0.4)1 (0.5)0.954
    Joint pain4 (1.8)0 (0)0.054
    Fistula5 (2.2)0 (0)0.031
    Weight loss1 (0.4)0 (0)0.336
    Fever1 (0.4)1 (0.5)0.954
    Fatigue5 (2.2)5 (2.4)0.897
    Other symptoms8 (3.6)3 (1.4)0.164
Location
    Upper GI19 (8.5)2 (1.0)< 0.001
    Small bowel73 (32.7)16 (7.7)< 0.001
    Terminal ileum153 (68.6)21 (10.1)< 0.001
    Colon101 (45.3)154 (74.4)< 0.001
    Rectum49 (22.0)111 (53.6)< 0.001
Severity
    Very mild7 (3.1)9 (4.3)0.519
    Mild11 (4.9)23 (11.1)0.019
    Moderate38 (17.0)55 (26.6)0.018
    Strong88 (39.5)69 (33.3)0.187
    Very strong75 (33.6)49 (23.7)0.023
Physician
    Gastroenterologist85 (38.1)97 (46.9)0.066
    Hospital104 (46.6)73 (35.3)0.017
    General practitioner18 (8.1)19 (9.2)0.682
    Expert in IBD9 (4.0)9 (4.3)0.871
    Another consultant4 (1.8)8 (3.9)0.187
    Others2 (0.9)2 (0.9)0.172
Diagnostic tests
    Colonoscopy175 (78.5)199 (96.1)< 0.001
    Gastroscopy5 (2.2)1 (0.5)0.111
    Sonography4 (1.8)1 (0.5)0.193
    Computed tomography7 (3.1)1 (0.5)0.037
    Magnetic resonance imaging5 (2.2)1 (0.5)0.028
Diagnosis change23 (10.3)35 (16.9)0.070
    Positive family history35 (15.7)35 (16.9)0.808
    Parents13 (37.1)10 (28.6)0.445
    Siblings12 (5.4)8 (22.9)0.290
    Aunt/uncle2 (0.9)8 (22.9)0.040
    Grandparents4 (1.8)9 (25.7)0.124
    Knowledge of IBD49 (22.0)39 (18.8)0.437
    Affected person27 (55.1)20 (51.3)0.721
    Media10 (20.4)7 (17.9)0.772
    Internet8 (16.3)6 (15.4)0.904
    Profession6 (12.2)9 (23.1)0.179
Medication
    Mesalazine149 (66.8)180 (87.0)< 0.001
    Budesonide68 (30.5)24 (11.6)< 0.001
    Cortisone54 (24.2)115 (55.6)< 0.001
    Azathioprine2 (0.9)29 (14.0)0.007
    Methotrexate7 (3.1)1 (0.5)0.607
    Infliximab7 (3.1)5 (2.4)0.649
    Adalimumab17 (7.6)1 (0.5)0.042
    Local treatment13 (5.8)64 (30.9)< 0.001
Table 2 Univariate analysis
Parameter
Patient waiting time
Physician diagnostic time


HR
P value
HR
P value
Sex, female vs maleCD1.2350.0890.8520.222
    UC0.9540.7140.8970.407
Age, ≤ 40 vs > 40 yrCD1.0710.6541.1760.329
UC1.4070.0311.1090.508
Year of diagnosis, ≤ 2000 vs > 2000CD1.0810.5200.9750.846
    UC0.9470.6660.9760.856
Predominant symptom
    Diarrhea, yes vs noCD0.8260.1161.4840.003
UC1.1410.3051.0650.640
    Constipation, yes vs noCD2.0450.4401.8350.517
    UC1.0110.9910.8820.893
    Abdominal pain, yes vs noCD1.3070.0380.8340.191
    UC1.0960.7010.7080.167
    Heartburn, yes vs noCD0.9750.9790.8260.844
    Bloating, yes vs noUC0.2180.0100.7890.664
    Blood in stool, yes vs noCD0.6090.0691.2720.419
UC1.0140.9160.9990.993
    Nausea/vomiting, yes vs noCD1.2160.5200.6750.233
    Skin, yes vs noCD1.1640.8725.1780.044
UC0.2950.1383.6370.108
    Joint pain, yes vs noCD0.8440.7030.3230.039
    Fistula, yes vs noCD2.4500.0320.6560.334
    Weight loss, yes vs noCD0.3870.2365.1780.044
    Fever, yes vs noCD0.3870.2360.6200.619
UC6.1910.0261.2070.838
    Fatigue, yes vs noCD1.4820.3351.4520.390
    UC1.6520.2251.9370.101
Symptoms
    Diarrhea, yes vs noCD0.590< 0.0010.9470.732
    UC1.3310.0681.0280.867
    Constipation, yes vs noCD1.1030.6440.7470.209
    UC1.0310.9210.8080.513
    Abdominal pain, yes vs noCD0.9880.9340.9630.812
    UC1.0180.8890.9520.708
    Heartburn, yes vs noCD0.9880.9470.7350.110
    UC0.6970.1401.0140.955
    Bloating, yes vs noCD0.8270.1500.8420.235
    UC0.8140.1320.9600.770
    Blood in stool, yes vs noCD0.9320.5720.8890.393
    UC0.9700.8560.9130.586
    Nausea/vomiting, yes vs noCD1.2640.0751.0820.574
    UC1.2100.3340.9660.864
    Skin, yes vs noCD0.8010.2610.6280.036
    UC0.6630.1570.9470.859
    Joint pain, yes vs noCD0.8820.4030.7330.066
    UC0.7800.3090.8360.478
    Fistula, yes vs noCD1.2800.2310.9370.770
    UC0.6940.4210.7660.574
    Weight loss, yes vs noCD1.0190.8750.9000.416
    UC1.4000.0160.8930.429
    Fever, yes vs noCD1.1960.2391.1420.420
    UC1.3810.1501.6540.026
    Fatigue, yes vs noCD1.0940.4570.9590.746
    UC0.9610.7570.7670.045
    EIM, yes vs noCD0.9020.4500.7840.104
    UC0.7450.1290.9130.651
Location
    Upper GI, yes vs noCD1.1980.4001.2560.323
UC0.8130.7480.6680.545
    Small bowel, yes vs noCD0.9100.4610.9290.594
    UC1.0070.9760.8180.411
    Terminal ileum, yes vs noCD0.9640.7781.1830.237
    UC0.8490.4321.0870.700
    Colon, yes vs noCD1.1350.2920.9270.565
    UC1.0140.9241.0120.934
    Rectum, yes vs noCD1.0750.6161.0430.791
    UC0.8640.2510.9070.457
Disease severity, strong vs mildCD1.3590.0231.2400.154
UC1.0980.4691.2470.096
Diagnosis made in hospital, yes vs noCD0.9150.4640.9920.952
UC1.3140.0391.0130.923
Diagnosis made by gastroscopy, yes vs noCD1.0590.8912.8570.011
UC1.5200.6440.8040.815
Family history, positive vs negativeCD1.5870.0051.0730.697
UC0.7670.1200.7080.053
Medication, strong vs mildCD1.0670.6470.9650.816
UC0.9670.7940.9910.944
Table 3 Multivariate analysis for Crohn’s disease
ParameterPatient waiting time

HR
95%CI
P value
Abdominal pain11.4281.062-1.9190.018
Fistula12.8411.125-7.1750.027
Positive family history1.7341.196-2.5140.004
Table 4 Multivariate analysis of physician diagnostic time in Crohn´s disease
ParameterPhysician diagnostic time

HR
95%CI
P value
Diarrhea11.4381.085-1.9060.012
Skin lesions19.7461.273-74.6090.028
Gastroscopy2.5701.037-6.3710.042
Table 5 Multivariate analysis for ulcerative colitis
ParameterPatient waiting time

HR
95%CI
P value
Bloating10.2070.050-0.8480.029
Diarrhea1.4631.030-2.0790.034
Table 6 Multivariate analysis of physician diagnostic time in ulcerative colitis
ParameterPhysician diagnostic time

HR
95%CI
P value
Fatigue0.6850.512-0.9170.011
Fever1.8131.096-2.9990.020
Positive family history0.6810.466-0.9940.046