Case Control Study
Copyright ©The Author(s) 2019.
World J Gastroenterol. Feb 28, 2019; 25(8): 967-979
Published online Feb 28, 2019. doi: 10.3748/wjg.v25.i8.967
Table 1 Basic demographic characteristics n (%)
Drug-induced colitis, n = 211Non-inflammatory controls, n = 211Inflammatory controls, n = 211
Basic characteristics
Age (yr)62.3 ± 16.462.2 ± 16.361.8 ±15.7
Gender (male)97 (46.0)97 (46.0)97 (46.0)
Height (cm)168.9 ± 9.5168.3 ± 12.4170.0 ± 9.3
Body weight (kg)76.9 ± 22.675.0 ± 20.372.9 ± 19.7
BMI (kg/m2)26.9 ± 7.2a1b26.3 ± 6.825.0 ± 5.6a3
ASAb2
ASA 10 (0)3 (1.4)0 (0)
ASA 2133 (63.0)169 (80.1)155 (73.5)
ASA 370 (33.2)37 (17.5)52 (24.6)
ASA 48 (3.8)2 (0.9)4 (1.9)
ECOGb2,b3
ECOG 00 (0)1 (0.5)2 (0.9)
ECOG 18 (3.8)75 (35.5)13 (6.2)
ECOG 2149 (70.6)104 (49.3)147 (69.7)
ECOG 341 (19.4)26 (12.3)43 (20.4)
ECOG 413 (6.2)5 (2.4)6 (2.8)
Indication of colonoscopyb1,a2
Diarrhoea73 (34.6)95 (45.0)97 (46.0)
Constipation6 (2.8)5 (2.4)1 (0.5)
Gastrointestinal bleeding63 (29.9)31 (14.6)36 (17.1)
Abdominal pain47 (22.3)54 (25.6)46 (21.8)
Weight loss6 (2.8)5 (2.4)4 (1.9)
Scheduled survey2 (0.9)1 (0.5)2 (0.9)
Miscellaneous14 (6.6)20 (9.5)25 (11.8)
Table 2 Comorbidities n (%)
ComorbidityDrug-induced colitis, n = 211Non-inflammatory controls, n = 211Inflammatory controls, n = 211
Pulmonary39 (18.5)31 (14.7)37 (17.5)
Cardiac110 (52.1)93 (44.1)87 (41.2)
Neurological27 (12.8)23 (10.9)19 (9.0)
Psychiatric10 (4.7)9 (4.3)10 (4.7)
Endocrine47 (22.3)44 (20.9)30 (14.2)
Renal28 (13.2)18 (8.5)21 (10.0)
Hepatic11 (5.2)13 (6.2)11 (5.2)
Oncological14 (6.6)25 (11.8)17 (8.1)
Other19 (9.0)15 (7.1)16 (7.6)
Heart failure35 (16.6)16 (7.6)b231 (14.7)a3
Renal insufficiency24 (11.4)14 (6.6)18 (8.5)
Atrial fibrillation26 (12.3)18 (8.5)22 (10.4)
Coronary heart disease47 (22.3)28 (13.3)a235 (16.6)
Peripheral arterial occlusive disease7 (3.3)10 (4.7)11 (5.2)
Atherosclerosis74 (35.1)b139 (18.5)b240 (19.0)
Arterial hypertension98 (46.4)97 (46.0)87 (41.2)
Diabetes mellitus46 (21.8)45 (21.3)32 (15.2)
Hypercholesterinaemia20 (9.5)16 (7.6)18 (8.5)
Hyperlipoproteinaemia22 (10.4)a111 (5.2)a29 (4.3)
Chronic obstructive lung disease29 (13.7)24 (11.4)27 (12.8)
Stroke14 (6.6)9 (4.3)11 (5.2)
Smoking77 (36.7)66 (31.3)78 (37.0)
Surgery9 (4.3)1 (0.5)a23 (1.4)
Intensive care therapy9 (4.3)2 (0.9)a24 (3.1)
Table 3 Histopathological reassessment n (%)
Parameter (n = 28)Drug-induced colitis without atherosclerosisDrug-induced colitis with atherosclerosisIschaemiccolitis
Oedema2 (7.1)2 (7.1)4 (14.3)
Haemorrhage1 (3.6)a28 (28.6)a16 (21.4)
Lymphocytic infiltration27 (96.4)27 (96.4)27 (96.4)
Granulocytic infiltration27 (96.4)26 (92.9)28 (100.0)
Eosinophilic infiltration12 (42.9)b27 (25.0)1 (3.6)a3
Erosions2 (7.1)b29 (32.1)a110 (35.7)
Ulcerous lesions4 (14.3)b23 (10.7)16 (57.1)b3
Necrosis1 (3.6)b21 (3.6)16 (57.1)b3
Fibrin plaques on erosions2 (7.1)2 (7.1)3 (10.7)
Fibrosis3 (10.7)3 (10.7)7 (25.0)
Table 4 Drug assessment n (%)
GroupDrug-induced colitis, n = 211Non-inflammatory controls, n = 211Inflammatory controls, n = 211
Betablocker97 (46.0)78 (37.0)83 (39.3)
ACE inhibitors70 (33.2)55 (26.1)62 (29.4)
Angiotensin II inhibitors20 (9.5)b124 (11.4)6 (2.8)b3
Non-Dihydropyridines1 (0.5)a16 (2.8)7 (3.3)
Dihydropyridines34 (16.1)a127 (12.8)20 (9.5)
Diuretics55 (26.1)b129 (13.7)b233 (15.7)
Benzothiazines28 (13.3)33 (15.6)24 (11.4)
Aldosterone antagonists13 (6.2)13 (6.2)12 (5.7)
Nitrates7 (3.3)13 (6.2)5 (2.4)
Antiarrhythmic drugs7 (3.3)2 (0.9)2 (0.9)
Glycosides10 (4.7)2 (0.9)a28 (3.8)
ASS (100 mg to 300 mg)67 (31.8)b147 (22.3)a240 (19.0)
Platelet aggregation inhibitors20 (9.5)b110 (4.7)6 (2.8)
NSAIDs35 (16.6)b121 (10.0)a28 (3.8)a3
Metamizole21 (10.0)16 (7.6)21 (10.0)
Potassium4 (1.9)3 (1.4)6 (2.8)
Vitman K antagonists/coumarin derivates16 (7.6)9 (4.3)11 (5.2)
Direct thrombin inhibitors6 (2.8)2 (0.9)4 (1.9)
Glucocorticosteroids13 (6.2)b114 (6.6)41 (19.4)b3
Opioids20 (9.5)22 (10.4)23 (10.9)
Metformin8 (3.8)16 (7.6)4 (1.9)b3
Insulin17 (8.1)15 (7.1)17 (8.1)
Statins56 (26.5)a142 (19.9)38 (18.0)
Fibrates7 (3.3)a11 (0.5)a21 (0.5)
Levothyroxine25 (11.8)39 (18.5)22 (10.4)a3
Thyreostatics3 (1.4)3 (1.4)1 (0.5)
Proton pump inhibitors100 (47.4)85 (40.3)81 (38.4)
Penicillin derivates0 (0.0)2 (0.9)2 (0.9)
Macrolides0 (0.0)1 (0.5)1 (0.5)
Gyrase inhibitor0 (0.0)0 (0.0)0 (0.0)
Carbapenems1 (0.5)0 (0.0)0 (0.0)
Imidazoles3 (1.4)1 (0.5)1 (0.5)
Cephalosporins2 (0.9)2 (0.9)2 (0.9)
Antbiotics4 (1.9)5 (2.4)3 (1.4)
SSRIs14 (6.6)5 (2.4)a216 (7.6)a3
Tricyclic antidepressants7 (3.3)10 (4.7)7 (3.3)
Neuroleptics5 (2.4)8 (3.8)6 (2.8)
Sedatives16 (7.6)16 (7.6)16 (7.6)
Others127 (60.2)a1125 (59.2)147 (69.7)a3
Number of drugsb4.5 ± 2.83.9 ± 3.0a23.9 ± 3.2
Table 5 Echocardiographic parameters n (%)
ParameterDrug-induced colitis, n = 54 of 211 (25.6)Non-inflammatory controls, n = 34 of 211 (16.1)Inflammatory controls, n = 24 of 211 (11.4)
Dilated right atrium4 (7.4)a14 (11.4)5 (23.8)
Dilated left ventricle8 (14.8)0 (0.0)6 (26.1)b3
Hypokinesia10 (18.5)5 (14.3)3 (13.0)
Right heart failure5 (9.3)4 (11.4)2 (8.7)
Diastolic dysfunction22 (43.1)16 (48.5)7 (30.4)
LV Functionb2,b3
Normal (> 50%)39 (72.2)29 (85.3)17 (73.9)
Slightly decreased (40%-50%)4 (7.4)5 (14.7)1 (4.3)
Moderately decreased (30%-40%)5 (9.3)0 (0.0)2 (8.7)
Severely decreased (< 30%)6 (11.1)0 (0.0)3 (13.0)
Table 6 Binary logistic regression analysis
ParameterDrug-induced colitis vs inflammatory controls OR (95%CI)Drug-induced colitis vs non-inflammatory controls OR (95%CI)
Heart failure0.6 (0.3-1.1)1.3 (0.6-2.8)
Atherosclerosis2.1 (1.2-3.7)b1.7 (0.9-3.1)
Dihydropyridines1.3 (0.7-2.5)1.0 (0.5-1.8)
Diuretics1.5 (0.8-2.6)1.7 (1.0-3.0)
Digitalis glycosides1.1 (0.4-3.1)3.7 (0.8-17.9)
Low-dose ASS1.7 (1.0-2.8)1.1 (0.7-1.9)
Platelet aggregation inhibitors2.0 (0.7-5.7)1.4 (0.6-3.3)
NSAIDs6.7 (3.0-15.1)b2.2 (1.2-4.0)a
Statins1.1 (0.6-1.9)0.9 (0.6-1.6)
Fibrates9.1 (1.1-74.3)a8.9 (1.1-74.2)a